300+ Essential Academic Words for Duolingo English Test

Do you have trouble finding the right vocabulary in the Duolingo English Test (DET)? Academic words are precise words used in university textbooks, research and debate, and knowing them helps you read and write about academic topics more clearly. In this guide you will find more than 250 academic words grouped by topic, with definitions and examples, plus a 30-day study plan.

Want to ACE the Duolingo English Test (DET) And Reach Your Goals? Get Your FREE Lume Account Today to Unlock… ✅ 10,000+ PRACTICE QUESTIONS with detailed answers ✅ FREE MOCK TESTS with fast & accurate AI scoring ✅ Get BETTER SCORES with a PERSONALIZED study plan GET YOUR FREE ACCOUNT NOW (Limited seats available!)

Why Academic Vocabulary Matters in the Duolingo English Test

The Duolingo English Test is computer-adaptive: the difficulty of some questions changes dynamically during the test, and the number of questions varies. For writing questions, the grading engine evaluates lexis (vocabulary), so accurate and precise word choice is part of what is evaluated.

How Vocabulary Impacts Every DET Skill

Vocabulary is not only about the “Read and Select” test (where you decide whether a word is a real English word); it supports your performance across the test:

• Literacy and Comprehension: Reading questions such as Read and Select and Interactive Reading count towards the Literacy and Comprehension subscores. Knowing academic vocabulary makes these tasks easier.
• Production (Writing and Speaking): Writing and speaking tasks count towards the Production subscore. In writing, precise words (for example, “substantiate” instead of “prove”, where it fits) can improve your lexical sophistication and choice of words. In speaking, the Help Center lists content, fluency and pronunciation, so precise words help you express your ideas clearly.
• Contextual Awareness: In the “Interactive Reading” tasks, knowing common academic linking words can help you follow how a text is organized and what the author thinks.

What “Academic Words” Actually Mean

Academic words are words used in higher education, in textbooks, scientific research and debate. They are not always rare words, but they are precise. For instance, “change” is a general word, while “fluctuate” is an academic word with a more specific meaning: to rise and fall irregularly.

Common Vocabulary Challenges for International Students

A common mistake is the “repetition trap”: using the word “important” five times in one paragraph. Other learners misuse “big words,” which can make a sentence sound unnatural or unclear. The goal is a balance between exact academic terms and simple language. Another problem is “false friends”: words that look similar in your native language and in English but have different meanings.

How the DET Evaluates Vocabulary in Writing

For writing questions, the Help Center lists lexis (vocabulary) among the aspects the grading engine evaluates (see How the Items Are Scored). It lists these parts of lexis (the short notes below are our own plain-English explanations):

• Lexical diversity: the variety of words you use.
• Lexical sophistication: how advanced your word choice is.
• Choice of words: whether the words suit the context.
• Formation of words: using correct word forms.
• Spelling.

250+ Essential Academic Words for Duolingo English Test

Below is a list of more than 250 academic words (259 different words) grouped into five topics. A few words, such as Assimilation and Integration, appear twice because they have different meanings in different topics.

1. Academic Words for Education & Learning (54 words)

These words are useful when you write or speak about education, learning and research.

 

Word	Type	Definition	Example
Acquire	v	To gain a new skill or knowledge	Students often acquire a second language more efficiently when they are immersed in a native-speaking environment.
Cognitive	adj	Related to mental processes	Researchers are studying how excessive screen time affects the cognitive development of young children.
Curriculum	n	The set of courses in a school	The modern school curriculum should prioritize critical thinking skills over the simple memorization of facts.
Pedagogy	n	The theory and practice of teaching	Innovative pedagogy involves using collaborative projects to encourage active participation among students.
Empirical	adj	Based on observation or evidence	The scientist provided empirical evidence to support her theory regarding the impact of climate change on local crops.
Hypothesis	n	A proposed theory to be tested	Our initial hypothesis suggested that students who study in groups achieve higher grades than those who study alone.
Methodology	n	A system of methods	The research methodology employed in this study combines both surveys and personal interviews for better accuracy.
Literacy	n	Ability to read and write	Enhancing digital literacy is essential for modern workers to navigate the complexities of the global economy.
Discipline	n	A specific field of study	Physics is an academic discipline that requires a strong foundation in mathematics and logical reasoning.
Synthesize	v	To combine different ideas	It is difficult for students to synthesize information from multiple complex sources into a single cohesive essay.
Paradigm	n	A typical example or pattern	The shift toward online learning represents a significant paradigm shift in the history of global education.
Qualitative	adj	Measuring quality rather than quantity	Qualitative research provides deep insights into the personal motivations and behaviors of a target audience.
Quantitative	adj	Measuring quantity rather than quality	The report included quantitative data such as percentages and growth rates to illustrate the market’s expansion.
Thesis	n	A statement or theory to be proved	In her senior thesis, she argued that social media has a profound impact on political engagement among youth.
Abstract	adj	Existing in thought but not physically	Younger children often find it challenging to grasp abstract concepts such as justice or infinity.
Credible	adj	Able to be believed; convincing	It is vital for students to use credible sources when conducting academic research to ensure the validity of their work.
Evaluate	v	To judge or determine the value	Teachers use standardized tests to evaluate whether students have met the required learning objectives.
Inherent	adj	Existing as a permanent attribute	There are inherent risks involved in any major scientific experiment that explores unknown territories.
Objective	adj	Not influenced by personal feelings	A journalist must remain objective and report the facts without letting personal biases interfere with the story.
Subjective	adj	Based on personal feelings	Art criticism is often highly subjective, as different people perceive the beauty of a painting in various ways.
Validation	n	The action of checking accuracy	Peer review serves as a crucial form of validation for new discoveries within the scientific community.
Scholarship	n	Academic study or financial aid	He was awarded a full scholarship to the university due to his exceptional performance in mathematics.
Competency	n	The ability to do something successfully	Demonstrating technical competency is a key requirement for students pursuing a degree in engineering.
Comprehensive	adj	Including all elements	The university provided a comprehensive guide to help international students adapt to life on campus.
Elucidate	v	To make something clear; explain	The professor attempted to elucidate the complex theories of quantum physics through simple analogies.
Foundation	n	The basis or groundwork	A strong primary education provides the necessary foundation for all future academic and professional success.
Integration	n	The act of combining into a whole	The integration of technology into the classroom has significantly changed how teachers deliver their lessons.
Rationale	n	A logical basis for a belief	The school board provided a clear rationale for why they decided to extend the length of the academic year.
Scrutinize	v	To examine or inspect closely	Scholars must scrutinize historical documents carefully to ensure they are not interpreting events incorrectly.
Versatile	adj	Able to adapt to many functions	A versatile education allows graduates to work in a wide variety of industries and roles.
Assimilation	n	The process of absorbing information	The assimilation of new scientific concepts requires time and repetitive practice for most students.
Attainment	n	The action of achieving something	High levels of educational attainment are strongly linked to better career opportunities and higher salaries.
Collaboration	n	Working together on a task	Successful group projects depend on effective collaboration and clear communication among all team members.
Correlation	n	A mutual relationship between things	Studies show a direct correlation between regular physical exercise and improved mental health in students.
Deduction	n	Reaching a conclusion by reasoning	Through a process of logical deduction, the detective was able to identify the most likely suspect.
Erudition	n	Great knowledge or learning	The author’s deep erudition is evident in the detailed historical references found throughout the book.
Facilitate	v	To make an action or process easy	Modern online platforms facilitate communication between students and teachers across different time zones.
Intellectual	adj	Relating to the intellect	Universities serve as hubs for intellectual growth, where students are encouraged to challenge traditional ideas.
Mentor	n	An experienced advisor	Having a professional mentor can provide invaluable guidance for students who are just starting their careers.
Motivation	n	The reason for acting a certain way	Internal motivation is often a more powerful driver of academic success than external rewards like grades.
Observation	n	The action of observing something	Careful observation of nature allows scientists to develop new theories about how the world works.
Perception	n	The ability to see, hear, or become aware	Public perception of the education system can be influenced by media reports and standardized test results.
Proficiency	n	A high degree of skill or expertise	Achieving proficiency in a foreign language requires years of consistent study and practical application.
Reflexive	adj	Performed without conscious thought	Experienced teachers often have a reflexive response to common classroom management challenges.
Speculation	n	Forming a theory without firm evidence	Without hard data, any claims about the future of the economy are merely academic speculation.
Theoretical	adj	Concerned with theory rather than practice	While the plan is perfect in a theoretical sense, it may encounter many difficulties during actual implementation.
Uniformity	n	The quality of being the same	Some educators argue that strict uniformity in the curriculum limits the creativity of individual students.
Adaptable	adj	Able to adjust to new conditions	In a rapidly changing job market, being adaptable is more important than having a specific set of fixed skills.
Assessment	n	The evaluation of someone or something	Formative assessment allows teachers to provide feedback to students while they are still in the process of learning.
Cognition	n	The mental action of acquiring knowledge	Human cognition is a complex field that explores how we perceive, remember, and think about the world.
Concept	n	An abstract idea or notion	The concept of democracy has evolved significantly since its origins in ancient civilizations.
Theory	n	A system of ideas intended to explain	The theory of evolution provides a comprehensive framework for understanding the diversity of life on Earth.
Validity	n	The quality of being logically sound	Critics questioned the validity of the study because the sample size was too small to be representative.
Pedantic	adj	Overly concerned with minor details	While accuracy is important, being overly pedantic about grammar can sometimes discourage students from speaking.

2. Academic Words for Science & Technology

Word	Type	Definition	Example
Innovation	n	A new method, idea, or product	Continuous innovation in the field of renewable energy is essential to reducing our dependence on fossil fuels.
Automate	v	To operate by using machines	Many factories have chosen to automate their assembly lines to increase production speed and reduce human error.
Data-driven	adj	Based on data analysis	Modern businesses rely on data-driven strategies to understand customer behavior and optimize their marketing efforts.
Mechanism	n	A system of parts working together	Scientists are still trying to understand the exact biological mechanism that causes certain cells to regenerate.
Infrastructure	n	Basic physical structures	Developing a robust digital infrastructure is a priority for nations looking to compete in the global economy.
Algorithm	n	Rules followed by a computer	Social media platforms use a complex algorithm to determine which posts appear at the top of a user’s feed.
Cybersecurity	n	Protection against digital attacks	As more personal information is stored online, the importance of cybersecurity has become a major global concern.
Feasibility	n	The state of being possible	Before starting the construction project, the city council conducted a feasibility study to ensure it was affordable.
Encryption	n	Converting information into code	Strong encryption is necessary to protect sensitive financial transactions from being intercepted by hackers.
Interface	n	A point where systems meet	A user-friendly interface is critical for the success of any new mobile application or software program.
Optimization	n	Making something as effective as possible	Search engine optimization is a key technique used by websites to increase their visibility in search results.
Prototype	n	A preliminary version of a product	The engineers built a working prototype of the new electric car to test its performance in extreme weather conditions.
Simulation	n	The imitation of a process	Astronauts spend hundreds of hours in a high-tech simulation to prepare for the physical challenges of space travel.
Virtual	adj	Simulated by computer software	Many universities now offer virtual campus tours for students who are unable to visit the school in person.
Analytics	n	The systematic analysis of data	Learning analytics can help educators identify which students are struggling and need additional support.
Breakthrough	n	A significant advance	The discovery of a new vaccine represents a major medical breakthrough that could save millions of lives.
Component	n	An essential part of a whole	The battery is the most expensive component in an electric vehicle, accounting for much of its total cost.
Efficiency	n	Achieving maximum productivity	Improving the energy efficiency of home appliances can significantly reduce monthly electricity bills for families.
Evolution	n	The gradual development	The evolution of the smartphone has completely changed how people communicate and access information.
Hybrid	n/adj	A thing made by combining elements	A hybrid working model allows employees to split their time between the office and their own homes.
Implement	v	To put into effect	The government plans to implement new regulations to limit the amount of plastic waste produced by businesses.
Network	n	A group of interconnected systems	A global network of researchers is working together to find a cure for various rare genetic diseases.
Precision	n	The quality of being exact	Surgical robots allow doctors to perform complex operations with a level of precision that is impossible for humans.
Reliability	n	The quality of being trustworthy	When choosing a cloud storage provider, users prioritize the reliability and security of the service.
Revolutionize	v	To change something radically	The introduction of the internet helped to revolutionize the way we shop, work, and interact with others.
Sophisticated	adj	Highly complex or developed	Modern weather forecasting uses sophisticated computer models to predict storms with high accuracy.
Technical	adj	Relating to a particular subject	You don’t need deep technical knowledge to operate this device, as it was designed for the average consumer.
Transmission	n	The act of sending or passing on	Fiber-optic cables allow for the rapid transmission of large amounts of data across vast distances.
Verify	v	To make sure something is true	Two-factor authentication is a secure way to verify a user’s identity before allowing them to access an account.
Digitalization	n	Conversion of info to digital format	The digitalization of library records has made it much easier for researchers to find rare historical documents.
Advanced	adj	Far on in progress	The lab is equipped with advanced technology that allows scientists to study the structure of atoms.
Apparatus	n	The equipment for a task	Firefighters must wear special breathing apparatus to protect themselves from smoke and toxic fumes.
Application	n	A program for a specific purpose	This new mobile application allows users to track their daily water intake and set health goals.
Binary	adj	Relating to a system of two	Computers process all information using a binary system consisting entirely of ones and zeros.
Circuit	n	A complete path for electric current	A broken circuit will prevent the electricity from flowing, causing the entire device to stop working.
Configuration	n	An arrangement of parts	You can change the configuration of the software to better suit your individual workflow and preferences.
Connectivity	n	The state of being connected	High-speed internet connectivity is essential for rural areas to participate in the modern digital economy.
Cybernetics	n	The study of communication and control in machines and living things	Cybernetics explores the similarities between the human nervous system and electronic control systems.
Platform	n	An online system or service that connects users or runs applications	The company’s new digital platform connects freelance workers with businesses looking for specific skills.
Processor	n	A machine that processes data	A faster processor allows a computer to handle multiple complex tasks at the same time without slowing down.
Protocol	n	A set of rules for data	Standardized communication protocols ensure that different types of devices can exchange data seamlessly.
Robotics	n	The branch of tech regarding robots	The field of robotics is expanding into healthcare, with robots being used to assist in delicate surgeries.
Software	n	Programs used by a computer	Regular software updates are necessary to protect your computer from new security threats and bugs.
Streamline	v	To make more efficient	The new management software helped the company streamline its hiring process and reduce paperwork.
Synthesis	n	The combination of components	The synthesis of new chemical compounds often leads to the development of more effective medicines.
Wireless	adj	Using radio waves to transmit	Wireless charging technology allows you to power your phone without having to plug in any cables.
Automated	adj	Controlled by machines	Automated customer service systems can handle simple inquiries, but complex issues still require human help.
Biometrics	n	Measurements of body features, such as fingerprints, used to identify people	Biometrics, such as fingerprint and facial recognition, are becoming standard features on modern smartphones.
Capacity	n	The maximum amount possible	The hard drive has a storage capacity of two terabytes, which is enough to hold thousands of high-quality photos.
Database	n	A structured set of data	The hospital maintains a central database that stores the medical records of all its patients securely.
Digital	adj	Expressed as a series of digits	We are living in a digital age where most information is accessed through screens rather than on paper.
Equipment	n	The necessary items for a purpose	Professional photographers invest a lot of money in high-quality equipment to ensure their photos are perfect.
Functionality	n	The quality of being functional	The latest update to the app improved its functionality and fixed several minor performance issues.
Gadget	n	A small mechanical tool	While some people see the smartwatch as a useless gadget, others find it very helpful for tracking their fitness.
Instrument	n	A tool or implement	The telescope is a vital instrument for astronomers who want to study the distant reaches of the universe.
Logic	n	Reasoning conducted by principles	Programming requires a strong grasp of logic to ensure that the code executes the correct commands.
System	n	A set of things working together	The city is planning to upgrade its public transportation system to reduce traffic congestion and pollution.

3. Academic Words for Society & Culture

Word	Type	Definition	Example
Demographics	n	Statistical data of a population	Changing demographics in urban areas are leading to a higher demand for diverse public services.
Globalization	n	Process of international integration	Economic globalization has allowed businesses to reach customers in even the most remote parts of the world.
Norms	n	Social standards or expectations	Social norms dictate how individuals are expected to behave in various formal and informal settings.
Heritage	n	Cultural traditions or property	Preserving our architectural heritage is important for maintaining a connection to our city’s historical past.
Diversity	n	Range of different things or people	Promoting diversity in the workplace can lead to more creative problem-solving and a better company culture.
Assimilation	n	Absorbing new ideas or cultures	The assimilation of immigrants into a new society is a complex process that takes several generations.
Socioeconomic	adj	Social & economic factors combined	Students from a low socioeconomic background may face additional challenges when pursuing higher education.
Marginalized	adj	Treated as insignificant	Governments should implement policies that protect the rights of marginalized groups in society.
Pluralism	n	Coexistence of different groups	Cultural pluralism encourages the coexistence of different ethnic and religious groups within one nation.
Urbanization	n	Making an area more urban	Rapid urbanization in developing countries often leads to the growth of overcrowded informal settlements.
Advocacy	n	Public support for a cause	Environmental advocacy groups work to raise awareness about the dangers of global warming and pollution.
Civil	adj	Relating to ordinary citizens	Protecting civil liberties is a fundamental responsibility of any truly democratic government.
Community	n	A group of people living together	Building a strong sense of community can help to reduce crime and improve the overall quality of life.
Conflict	n	A serious disagreement	Cultural conflicts can often be resolved through open dialogue and a willingness to understand other perspectives.
Convention	n	A way in which things are usually done	Following social conventions is often necessary to avoid offending people during formal ceremonies.
Discourse	n	Written or spoken communication	Civil discourse is essential for a healthy democracy where people can disagree without becoming hostile.
Ethics	n	Moral principles	Business ethics involve conducting company affairs in a way that is fair, honest, and socially responsible.
Ethnicity	n	Belonging to a social group that shares a culture or national origin	Your ethnicity can influence your cultural traditions, language, and the way you perceive the world.
Hierarchy	n	A system of ranking members	Many large corporations maintain a strict hierarchy where decisions are made by a small group of executives.
Ideology	n	A system of ideas and ideals	Political ideologies provide a framework for how a society should be organized and governed.
Inequality	n	Difference in size, degree, or status	Addressing income inequality is one of the most significant economic challenges facing modern governments.
Justice	n	Just behavior or treatment	The pursuit of social justice involves ensuring that all individuals have equal rights and opportunities.
Legislation	n	Laws, considered collectively	New legislation was introduced to protect consumers from deceptive advertising practices by large companies.
Migration	n	Movement from one part to another	Economic migration occurs when people move to another country in search of better job opportunities.
Philosophy	n	Study of fundamental nature	Studying philosophy helps students to develop their critical thinking skills and question their own assumptions.
Prejudice	n	Unreasonable dislike of a group	Education is one of the most effective tools for reducing prejudice and promoting tolerance in society.
Reform	n	A change made to improve something	The government is planning a major reform of the healthcare system to make it more affordable for everyone.
Secular	adj	Not connected with religion	In a secular society, public institutions and laws are not based on any specific religious beliefs.
Alienation	n	The state of being isolated	Many elderly people experience social alienation because they lack regular contact with their families.
Anthropology	n	The study of human societies	Anthropology explores the diverse ways that different cultures have adapted to their environments over time.
Citizen	n	A legally recognized subject	As a citizen of this country, you have both rights to protect you and responsibilities to fulfill.
Class	n	A set or category of things	In many societies, the gap between the upper class and the working class continues to grow wider.
Collective	adj	Done by people as a group	Protecting the environment is a collective responsibility that requires the effort of every single individual.
Diplomacy	n	Managing international relations	Diplomacy is often a more effective way to resolve international disputes than the use of military force.
Equality	n	The state of being equal	Achieving gender equality in the workplace is essential for creating a fair and productive economy.
Feminism	n	Advocacy of women’s rights	Modern feminism explores the various ways that gender roles impact both women and men in society.
Folklore	n	Traditional beliefs and stories	Local folklore often contains valuable lessons and reflects the unique history of a specific region.
Governance	n	The action or manner of governing	Good corporate governance involves being transparent and accountable to all company shareholders.
Humanism	n	Rationalistic system of thought	Secular humanism emphasizes the importance of human reason and ethics over religious dogma.
Identity	n	The fact of being who or what someone is	Our cultural identity is shaped by our language, traditions, and the community in which we were raised.
Institution	n	An organization founded for a purpose	Banks are financial institutions that play a critical role in the stability of a nation’s economy.
Liberalism	n	Respect for different behavior/opinions	Liberalism emphasizes the importance of individual freedom and the protection of civil rights.
Multicultural	adj	Relating to several cultural groups	Living in a multicultural city allows you to experience a wide variety of different foods, music, and traditions.
Patriotism	n	Devotion to one’s country	True patriotism involves working to improve your country and holding your government accountable for its actions.
Sovereignty	n	Supreme power or authority	Each nation has the right to maintain its sovereignty and make its own decisions without outside interference.
Tradition	n	Transmission of customs or beliefs	Many families have a tradition of gathering together for a large meal during major holidays.
Values	n	Principles or standards of behavior	Core values such as honesty and respect are taught to children at a very young age in most cultures.
Belief	n	An acceptance that something exists	It is important to respect the religious beliefs of others, even if they are very different from your own.
Custom	n	A traditional way of doing something	You should research the local customs before traveling to a new country to avoid being disrespectful.
Ethos	n	The characteristic spirit of a culture	The professional ethos of the company emphasizes the importance of hard work and integrity.
Integration	n	The act of combining into a whole	The integration of immigrants into the local community can lead to a more vibrant and diverse society.
Morality	n	Principles concerning right and wrong	Discussions about morality often involve complex questions about the nature of good and evil.

4. Academic Words for Environment & Nature 

Word	Type	Definition	Example
Sustainability	n	Ability to be maintained	Sustainability in farming is essential for ensuring food security for the growing global population.
Biodiversity	n	Variety of life in a habitat	Protecting the biodiversity of the rainforest is crucial because many undiscovered species could provide new medicines.
Conservation	n	Prevention of wasteful use	Water conservation has become a top priority for cities facing long periods of drought and limited rainfall.
Ecosystem	n	Biological community of organisms	The introduction of invasive species can disrupt a local ecosystem and cause native plants to die out.
Depletion	n	Reduction in quantity	The rapid depletion of natural resources is a major concern for scientists who are looking for alternative energy sources.
Emissions	n	Discharge of gas or radiation	Many countries have signed international agreements to reduce their carbon emissions and fight climate change.
Precipitation	n	Rain, snow, sleet, or hail	The desert receives very little annual precipitation, making it difficult for most plants and animals to survive.
Erosion	n	Destruction by natural forces	Heavy rainfall can lead to significant soil erosion, which can damage crops and pollute nearby rivers.
Contamination	n	Making something impure	Industrial waste can lead to the contamination of groundwater, posing a serious threat to public health.
Renewable	adj	Not depleted when used	Investing in renewable energy sources like wind and solar power is a key strategy for reducing pollution.
Atmosphere	n	Envelope of gases surrounding earth	The Earth’s atmosphere protects us from the sun’s harmful radiation and keeps the planet warm enough for life.
Catastrophe	n	Event causing great damage	An oil spill in the ocean can lead to an ecological catastrophe that takes decades for the environment to recover from.
Climate	n	Weather conditions in an area	Global warming is causing major changes in the world’s climate, leading to more frequent and severe storms.
Deforestation	n	Clearing of wide area of trees	Deforestation contributes to climate change by reducing the number of trees that can absorb carbon dioxide.
Degradation	n	Process of being worn down	Land degradation caused by overfarming can make soil less productive and lead to food shortages in the future.
Drought	n	Prolonged low rainfall	Farmers in the region are struggling to grow crops due to a severe drought that has lasted for several years.
Fossil	n/adj	Prehistoric remains	Burning fossil fuels like coal and oil releases greenhouse gases that contribute to global warming.
Habitat	n	Natural home of an organism	When we build new cities, we often destroy the natural habitat of many birds, insects, and small mammals.
Impact	n/v	A marked effect or influence	The environmental impact of the new factory will be carefully studied before construction is allowed to begin.
Ozone	n	A form of oxygen; in the upper atmosphere it forms a layer that absorbs harmful ultraviolet radiation	The ozone layer in the atmosphere is essential for protecting life on Earth from harmful ultraviolet radiation.
Pollution	n	Presence of harmful substances	Air pollution in large cities can lead to serious respiratory problems for children and the elderly.
Recycle	v	Convert waste into material	Most households are now encouraged to recycle their plastic, glass, and paper waste to reduce landfill use.
Toxic	adj	Poisonous; harmful	Many cleaning products contain toxic chemicals that can be harmful to humans and pets if not used correctly.
Wildlife	n	Wild animals collectively	National parks are created to provide a safe space for wildlife to live without the threat of human interference.
Geothermal	adj	Relating to earth’s internal heat	Geothermal energy is a clean and reliable power source that can be found in areas with high volcanic activity.
Greenhouse	n/adj	Relating to trapping heat, as in greenhouse gas	The greenhouse effect occurs when certain gases in the atmosphere trap heat, causing the planet’s temperature to rise.
Preservation	n	Action of preserving	The preservation of wetlands is important because they act as natural filters for water and provide homes for many animals.
Abatement	n	The ending or reduction of something	Noise abatement policies in the city aim to reduce the impact of traffic and construction on local residents.
Adaptation	n	The process of change	Evolutionary adaptation allows animals to survive in extreme environments by developing unique physical traits.
Agriculture	n	The science of farming	Modern agriculture relies on sophisticated technology to increase crop yields and reduce the use of water.
Arable	adj	Suitable for growing crops	As the population grows, finding enough arable land to feed everyone is becoming a significant global challenge.
Biosphere	n	The parts of Earth where living things exist	All living organisms on Earth are part of the biosphere, which includes the air, land, and water.
Carbon	n	A chemical element	Reducing your carbon footprint involves making choices that lower the amount of carbon dioxide you produce.
Chemicals	n	Substances obtained by chemistry	Scientists are developing new ways to clean up hazardous chemicals that have leaked into the soil or water.
Composting	n	The process of turning organic waste into compost	Composting your kitchen waste is an easy way to create nutrient-rich soil for your garden and reduce garbage.
Desalination	n	Removal of salt from seawater	Desalination technology allows coastal cities to turn seawater into fresh drinking water, though it is very expensive.
Desertification	n	Process by which land becomes desert	Overgrazing and climate change are the primary causes of desertification in many parts of the world.
Disposal	n	The action of throwing something away	The proper disposal of electronic waste is important because it contains many harmful and toxic materials.
Effluent	n	Liquid waste or sewage	Factories are required by law to treat their industrial effluent before discharging it into local rivers.
Extinction	n	The permanent disappearance of a species	If we do not take action soon, the loss of habitat will lead to the mass extinction of many endangered species.
Meteorological	adj	Relating to weather and the atmosphere	Meteorological data is used by pilots to avoid dangerous weather conditions during long-distance flights.
Pesticides	n	Substances used for destroying insects	The use of chemical pesticides in farming can have a negative impact on the health of local bee populations.
Radiant	adj	Sending out light or heat	Solar panels capture radiant energy from the sun and convert it into electricity for homes and businesses.
Hydrology	n	Branch of science regarding water	Studying hydrology allows scientists to predict when and where floods are most likely to occur.
Insulation	n	Material that prevents heat loss	Proper attic insulation can help to keep your home warm in the winter and cool in the summer.
Nitrogen	n	A colorless unreactive gas	Nitrogen is an essential nutrient for plants, but too much of it in the water can lead to harmful algae blooms.
Organic	adj	Derived from living matter	Many consumers prefer to buy organic produce because it is grown without the use of synthetic pesticides.
Toxin	n	A poison of plant or animal origin	Certain species of snakes produce a powerful toxin that can be fatal to humans if not treated immediately.
Vegetation	n	Plants considered collectively	The thick vegetation in the jungle provides a safe hiding place for many small animals and birds.

5. Academic Words for Business & Economy

Word	Type	Definition	Example
Fluctuate	v	To rise and fall irregularly	The price of gold tends to fluctuate wildly depending on the current stability of the global economy.
Monopoly	n	Exclusive control of a commodity	A government monopoly on telecommunications can lead to higher prices and a lack of innovation for consumers.
Revenue	n	Total income of a company	The company’s annual revenue increased by twenty percent thanks to the success of its new product line.
Fiscal	adj	Relating to government taxes	The government introduced new fiscal policies to encourage foreign investment and boost economic growth.
Capital	n	Wealth in the form of assets	Starting a new tech business requires a significant amount of initial capital to hire staff and buy equipment.
Inflation	n	General increase in prices	High inflation can reduce the purchasing power of consumers, making it more difficult for them to buy basic goods.
Liability	n	State of being responsible by law	Personal liability insurance can protect business owners from the high costs of legal claims and lawsuits.
Asset	n	A valuable thing or person	Real estate is often considered a safe long-term asset because it tends to increase in value over time.
Audit	n	Official inspection of accounts	Every year, the company undergoes an independent audit to ensure that its financial records are accurate and honest.
Budget	n	Estimate of income/expenditure	Creating a monthly budget is an essential step for individuals who want to manage their money and save for the future.
Commerce	n	Buying and selling activity	The growth of e-commerce has completely changed the retail industry and led to the closure of many physical stores.
Consumption	n	Using up of a resource	Domestic consumption of electricity peaks during the summer months when many people are using air conditioning.
Corporate	adj	Relating to a large company	Corporate social responsibility involves a business taking action to have a positive impact on society and the environment.
Deficit	n	The amount by which spending is greater than income	The national budget deficit is growing because the government is spending more money than it is collecting in taxes.
Equity	n	Value of shares in a company	Many employees are offered equity in the company as a way to motivate them to work harder and stay long-term.
Expenditure	n	The action of spending funds	Public expenditure on education and healthcare is vital for the long-term prosperity of any modern nation.
Investment	n	Money spent for profit	An investment in the stock market can provide a high return, but it also involves a significant amount of risk.
Marketable	adj	Fit to be sold	Graduates who have strong coding and data analysis skills are highly marketable in today’s digital economy.
Merger	n	Combination of two companies	The merger of the two major airline companies will likely lead to fewer choices and higher ticket prices for travelers.
Profitability	n	Degree to which business yields profit	The company is focusing on improving its profitability by reducing unnecessary costs and expanding into new markets.
Shareholder	n	Owner of shares in a company	Shareholders have the right to vote on major company decisions and receive a portion of the profits as dividends.
Statistics	n	Collection of numerical data	Economic statistics show that the rate of unemployment has fallen significantly over the past six months.
Subsidy	n	Money granted by the state	The government provides a subsidy to farmers to help them stay in business when crop prices are low.
Surplus	n	An amount left over	After all the bills were paid, the city was left with a budget surplus that it used to improve public parks.
Transaction	n	Instance of buying or selling	Digital transactions are becoming more common than cash because they are faster and more convenient for shoppers.
Utility	n	State of being useful	Economists use the concept of marginal utility to explain how much satisfaction a consumer gets from a product.
Yield	n	The profit or return produced by an investment or a crop	High-interest savings accounts provide a low yield but are much safer than investing in the volatile stock market.
Acquisition	n	Buying an asset or object	The major tech giant recently completed the acquisition of a small startup that specialized in artificial intelligence.
Bankruptcy	n	The legal status of being unable to pay debts	Several large retail chains were forced to declare bankruptcy due to the increasing popularity of online shopping.
Benchmarking	n	Evaluating by comparison	Industry benchmarking allows companies to compare their performance with that of their most successful competitors.
Broker	n	Person who buys/sells for others	A real estate broker can help you find a home that meets your needs and negotiate a fair price with the seller.
Conglomerate	n	A large corporation	The global conglomerate has business interests in a wide variety of industries, including media, fashion, and food.
Consumerism	n	A strong focus on buying and owning goods	Modern consumerism emphasizes the importance of buying new products to satisfy personal needs and desires.
Credit	n	Ability to obtain goods before payment	Maintaining a good credit score is essential for anyone who wants to take out a loan or buy a house in the future.
Currency	n	System of money in a country	The value of a nation’s currency can change daily based on its economic performance and political stability.
Diversification	n	Spreading investments or activities across different areas	Portfolio diversification involves spreading your investments across different industries to reduce your total risk.
Entrepreneur	n	Person who organizes a business	A successful entrepreneur must be willing to take risks and have the vision to turn a new idea into a profitable company.
Equilibrium	n	A state in which forces are balanced	Market equilibrium occurs when the supply of a product is exactly equal to the demand from consumers.
Franchise	n	Authorization to carry out activities	Buying a fast-food franchise allows an entrepreneur to start a business using a well-known brand and a proven system.
Gross	adj	Total amount before deductions	Your gross income is the total amount you earn before any taxes or other deductions are taken out of your paycheck.
Hedge	v	Protect against financial loss	Some investors buy gold as a way to hedge against inflation and protect their wealth during economic crises.
Interest	n	Money paid for the use of money	The interest rate on your credit card determines how much extra money you will have to pay back each month.
Liquidity	n	Availability of liquid assets	Maintaining a high level of liquidity allows a company to pay its short-term debts and handle unexpected expenses.
Logistics	n	Management of flow of things	Efficient logistics are critical for online businesses that need to deliver products to customers quickly and cheaply.
Macroeconomics	n	Branch of economics regarding large scale	Studying macroeconomics helps us to understand how factors like inflation and interest rates affect the entire country.
Portfolio	n	Range of investments	A well-balanced investment portfolio should include a mix of stocks, bonds, and other types of assets.
Tariff	n	Tax to be paid on imports	The government decided to place a high tariff on imported steel to protect local businesses from foreign competition.
Venture	n	A business project or enterprise, often involving risk	The two companies decided to start a joint venture to develop new technology for the automotive industry.
Wholesale	n	Selling goods in large quantities	Buying products at a wholesale price allows retailers to sell them to consumers at a higher price and make a profit.

Useful Transition Words & Connectors

Connectors will serve as the “cement” holding your academic vocabulary together. See the table below for help with transitions from one complicated idea to another.

Category	High-Level Connectors	Academic Example
Contrast	Conversely, Nevertheless, On the contrary, Albeit, Notwithstanding	The policy was effective in urban centers; nevertheless, it failed to address the unique needs of rural populations.
Addition	Furthermore, Moreover, Additionally, In tandem with, Coupled with	The rise in global temperatures is alarming. Furthermore, the rapid melting of polar ice caps poses a threat to coastal cities.
Cause & Effect	Consequently, Therefore, As a result, Hence, Accordingly	The factory failed to meet safety standards. Consequently, the local authorities decided to suspend its operations indefinitely.
Illustration	For instance, Notably, To exemplify, Particularly, Specifically	Renewable energy has several advantages. Notably, it can lower the running costs of homes and businesses.
Summary	In essence, Ultimately, To conclude, Overall, To encapsulate	The research covered various social factors. Ultimately, the study suggests that early education is the primary driver of career success.

Best Strategies to Memorize Academic Vocabulary Faster

Learn Words in Context, Not Isolation

Memorizing definitions from a list is not enough. Instead, focus on understanding how a word works within a sentence. The meaning of academic vocabulary is often connected with the field of knowledge it belongs to. Learning how a word is used also involves its tone and connotation.

Use Spaced Repetition Techniques

To move new words from short-term to long-term memory, review them at gradually increasing intervals. One simple schedule is to review a word after 1 hour, 1 day, 3 days and 7 days. Regular review reduces the “forgetting curve” and makes it easier to recall words when you are under time pressure.

Practice Vocabulary Through Speaking and Writing

Recognizing words passively is not enough. To use them well, you must practice using the words you learn. For example, each day pick five academic words and speak for 30 seconds using them. Alternatively, write a short paragraph that uses all of them.

Focus on Word Families and Collocations

Word families are groups of related words, such as the verb, noun, adjective and adverb forms of one word. For instance, when you study the verb “analyze,” you can also study its noun form “analysis,” its adjective form “analytical,” and its adverb form “analytically.” In addition, pay attention to collocations, which are words that usually go together. For example, “conduct research” is a common collocation in academic writing.

Read Academic English Daily

Try to read academic texts regularly, such as journal articles, news and magazine websites, and university blogs. Reading helps you recognize words in context and get used to the longer sentences you may meet in “Interactive Reading” and “Read and Complete”.

How to Use Academic Words Naturally in DET Speaking and Writing

Avoid Overusing Complex Vocabulary

A common mistake in the DET writing tasks is keyword stuffing. Putting too many academic words in one sentence can make the writing hard to understand. It is best to use complex words together with logical sentences and transition words. Quantity is not everything: one precise word used correctly is better than several academic terms used incorrectly.

Use Topic-Specific Vocabulary

The DET covers a range of topics, so take the topic of the prompt into account. For instance, if the topic is “The Environment,” it is more helpful to use specific words like sustainability and biodiversity than only general academic words.

Improve Lexical Diversity and Word Choice in Writing

To improve your lexical diversity and choice of words in writing, replace simple words with more precise ones. Use “beneficial” or “advantageous” instead of “good,” and “illustrate” or “demonstrate” instead of “show.” Such changes can add variety, as long as the new word fits the meaning.

Practice Time Management

Some tasks give you only a short time to plan. In Speak About the Photo you have 20 seconds to look at the photo before recording starts automatically, in Read, Then Speak the directions appear for 20 seconds before the timer begins, and Write About the Photo lasts 1 minute. Knowing academic words well helps them come to mind more quickly.

Common Vocabulary Mistakes DET Students Make

• Inappropriate collocations: Using a wrong verb and noun pair, like “make an experiment” instead of “conduct an experiment,” can sound unnatural. Such mistakes often come from literal translation, so learn words together with the words they usually go with.
• Incorrect word form: Some learners use the wrong part of speech, for instance by writing “The report provides an analyze” instead of the noun “analysis.” Such errors often come from learning words without understanding the function they have in a sentence. To keep the structure correct, learn word families.
• Generic fillers: Simple intensifiers such as “very big” or “really bad” make your writing less precise. Words such as “substantial” or “detrimental” give more clarity and strength, as long as they fit the meaning. Replacing these common crutches is an easy way to improve your word choice.

30-Day Academic Vocabulary Study Plan for DET Students

Use this 4-week plan as a flexible guide. It moves you from recognizing words to using them yourself.

Week	Focus Area	Daily Tasks	Production Goals	Weekly Milestone
Week 1	Foundation & Word Families	Learn 5 to 10 new words a day, starting with the Education list. Note the noun, verb, adjective and adverb forms of each.	Write a few sentences about your studies using the new words.	Name the noun, verb and adjective forms of the words you studied this week.
Week 2	Contextual Mastery	Focus on collocations (for example, “have an impact”). Study the Science & Technology and Society & Culture lists.	Practice “Write About the Photo” (1 minute) a few times a day, using precise words to describe what you see.	Use each new collocation in a sentence of your own.
Week 3	Fluency & Tone	Practice speaking about prompts on the Environment and Business topics. Replace fillers (very/really) with precise adjectives.	Record yourself speaking for up to 3 minutes, as in the Speaking Sample. Use connectors like “nevertheless” to link ideas.	Speak at a natural, steady pace and use precise words without long pauses.
Week 4	Speed & Pressure	Take a full practice test regularly. Review your writing and rewrite it with better word choices.	Practice the “Writing Sample” (5 minutes) as a short essay, using academic words only where they fit.	Finish your writing practice with time left to check spelling, grammar and punctuation.

Conclusion

Doing well on the Duolingo English Test means showing that you can understand and use English in academic contexts. Learning the academic words in this guide, and following the 30-day plan at your own pace, helps you build the vocabulary you need for study at university.

Take a Free DET Practice Test — Get AI Score in Minutes

Read this article in another language

• Tiếng Việt
• Español
• Português

Related practice resources

• Duolingo English Test Vocabulary List
• Duolingo English Test (DET) Writing Sample Questions
• Duolingo English Test Cheat Sheet: Tips, Templates, Strategy

Related: DET Collocation List for Writing and Speaking

Want to ACE the Duolingo English Test (DET) And Reach Your Goals? Get Your FREE Lume Account Today to Unlock… ✅ 10,000+ PRACTICE QUESTIONS with detailed answers ✅ FREE MOCK TESTS with fast & accurate AI scoring ✅ Get BETTER SCORES with a PERSONALIZED study plan GET YOUR FREE ACCOUNT NOW (Limited seats available!)