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TOEFL Reading Vocabulary: 200 Essential Academic Words
Writing30 Team
12 min read

How to Use This List
Recommended Study Method
- Read the word and definition. Say the word aloud to build pronunciation familiarity.
- Read the example sentence. Understand how the word is used in context.
- Write your own sentence. Using the word in a new context deepens retention.
- Review daily. Study 10-20 new words per day and review previous words.
- Practice in context. When you encounter these words in TOEFL passages, note how they are used.
Science & Technology (50 Words)
| # | Word | Definition | Example Sentence |
|---|---|---|---|
| 1 | hypothesis | A proposed explanation for a phenomenon | The researchers tested their hypothesis that increased CO2 levels accelerate plant growth. |
| 2 | empirical | Based on observation or experiment rather than theory | Empirical evidence suggests that the new drug reduces symptoms by 40%. |
| 3 | catalyst | A substance or factor that speeds up a process | The enzyme acts as a catalyst in the chemical reaction. |
| 4 | synthesis | The combination of elements to form a whole | Photosynthesis is the synthesis of glucose from sunlight, water, and carbon dioxide. |
| 5 | phenomenon | An observable event or occurrence | Scientists have studied the phenomenon of bioluminescence in deep-sea creatures. |
| 6 | variable | A factor that can change in an experiment | The researchers controlled every variable except temperature. |
| 7 | correlation | A mutual relationship between two things | There is a strong correlation between exercise frequency and cardiovascular health. |
| 8 | replicate | To reproduce or duplicate results | Other laboratories were unable to replicate the original findings. |
| 9 | mechanism | The process by which something works | The mechanism by which the virus enters cells is now well understood. |
| 10 | biodiversity | The variety of life in a particular habitat | Tropical rainforests contain the greatest biodiversity on Earth. |
| 11 | ecosystem | A community of interacting organisms and their environment | The wetland ecosystem supports hundreds of bird species. |
| 12 | sustainable | Able to be maintained at a certain rate or level | Sustainable farming practices protect soil quality for future generations. |
| 13 | innovation | A new method, idea, or product | Technological innovation has transformed communication in the 21st century. |
| 14 | adaptive | Able to adjust to new conditions | Species with adaptive traits are more likely to survive environmental changes. |
| 15 | genome | The complete set of genetic material in an organism | Mapping the human genome was a major scientific achievement. |
| 16 | habitat | The natural home of an organism | Deforestation destroys the natural habitat of many species. |
| 17 | mutation | A change in genetic structure | A random mutation in the gene led to antibiotic resistance. |
| 18 | paradigm | A model or pattern of thinking | The discovery shifted the scientific paradigm about disease transmission. |
| 19 | spectrum | A range or scale | The electromagnetic spectrum includes visible light, radio waves, and X-rays. |
| 20 | simulate | To imitate or model a process | Computer models simulate climate patterns over the next century. |
| 21 | adjacent | Next to or near something | The laboratory is adjacent to the main research building. |
| 22 | anomaly | Something that deviates from what is standard | The temperature anomaly suggested an unusual weather pattern. |
| 23 | compound | A substance made of two or more elements | Water is a compound of hydrogen and oxygen. |
| 24 | dormant | Temporarily inactive | The volcano has been dormant for over 500 years. |
| 25 | erosion | The gradual wearing away of material | Coastal erosion threatens buildings near the shoreline. |
| 26 | fusion | The joining of two or more things | Nuclear fusion powers the sun and other stars. |
| 27 | indigenous | Originating naturally in a particular place | The plant is indigenous to the tropical regions of South America. |
| 28 | magnitude | The great size or importance of something | The magnitude of the earthquake was measured at 7.2. |
| 29 | nutrient | A substance that provides nourishment | Soil nutrients are essential for healthy plant growth. |
| 30 | oscillate | To move back and forth at a regular speed | The pendulum oscillates with a period of exactly one second. |
| 31 | precipitation | Rain, snow, sleet, or hail | Annual precipitation in the region averages 800 millimeters. |
| 32 | quantify | To express as a number or amount | Researchers attempted to quantify the environmental impact of the factory. |
| 33 | resilient | Able to recover quickly from difficulties | Coral reefs are less resilient to temperature changes than previously thought. |
| 34 | saturate | To fill completely with a substance | The soil was saturated with water after three days of rain. |
| 35 | thermal | Relating to heat | Thermal energy from geothermal sources can generate electricity. |
| 36 | volatile | Liable to change rapidly and unpredictably | The chemical compound is highly volatile at room temperature. |
| 37 | wavelength | The distance between successive wave peaks | Different colors of light have different wavelengths. |
| 38 | yield | To produce or provide a result | The experiment yielded unexpected results. |
| 39 | acute | Severe or intense | The patient experienced acute pain in the lower back. |
| 40 | benign | Not harmful in effect | The tumor was benign and required no treatment. |
| 41 | chronic | Persisting for a long time | Chronic exposure to pollution increases the risk of respiratory disease. |
| 42 | contaminate | To make impure by exposure to a harmful substance | Industrial waste can contaminate groundwater supplies. |
| 43 | deficiency | A lack or shortage | Iron deficiency is one of the most common nutritional problems worldwide. |
| 44 | differentiate | To recognize or identify differences | Students must differentiate between correlation and causation. |
| 45 | extract | To remove or take out | Scientists extract DNA from cell samples for genetic analysis. |
| 46 | finite | Having limits or bounds | Earth has a finite supply of fossil fuels. |
| 47 | gradient | A rate of change in a quantity | The temperature gradient between the coast and inland areas is significant. |
| 48 | inhibit | To hinder or restrain | The medication inhibits the growth of bacteria. |
| 49 | latent | Existing but not yet developed or visible | The virus can remain latent in the body for years before symptoms appear. |
| 50 | methodology | A system of methods used in a field | The research methodology involved both surveys and laboratory experiments. |
Arts & Humanities (50 Words)
| # | Word | Definition | Example Sentence |
|---|---|---|---|
| 1 | aesthetic | Concerned with beauty or appreciation of beauty | The building's aesthetic appeal drew tourists from around the world. |
| 2 | allegory | A story with a hidden moral meaning | Orwell's Animal Farm is an allegory for political revolution. |
| 3 | ambiguous | Open to more than one interpretation | The poem's ambiguous ending has sparked decades of debate. |
| 4 | analogy | A comparison between things for explanation | The professor used an analogy between the brain and a computer. |
| 5 | anonymous | Of unknown authorship or identity | Many medieval poems were written by anonymous authors. |
| 6 | archive | A collection of historical records | The national archive preserves documents from the founding era. |
| 7 | articulate | To express clearly and effectively | The speaker articulated her position on educational reform. |
| 8 | authentic | Of undisputed origin; genuine | Scholars debated whether the manuscript was authentic. |
| 9 | chronicle | A factual written account of events | The medieval chronicle recorded events from 1100 to 1300. |
| 10 | civilization | An advanced state of human society | Ancient Egyptian civilization produced remarkable architectural achievements. |
| 11 | classical | Relating to ancient Greek or Roman culture | Classical architecture influenced building design for centuries. |
| 12 | coherent | Logical and consistent | The essay presented a coherent argument supported by evidence. |
| 13 | commemorate | To honor the memory of an event or person | The monument commemorates soldiers who served in the war. |
| 14 | commentary | An expression of opinions about an event or situation | The novel serves as social commentary on class inequality. |
| 15 | depict | To represent or show in a picture or story | The mural depicts scenes from everyday life in ancient Rome. |
| 16 | dialect | A form of a language specific to a region | The novelist wrote dialogue in the local dialect. |
| 17 | discourse | Written or spoken communication | Academic discourse requires precise language and evidence. |
| 18 | doctrine | A belief or set of beliefs held by a group | Religious doctrine influenced medieval European art and architecture. |
| 19 | eloquent | Fluent and persuasive in speaking or writing | The lawyer delivered an eloquent closing argument. |
| 20 | embody | To give a body to; to represent | The sculpture embodies the ideals of classical beauty. |
| 21 | era | A long and distinct period of history | The Renaissance era saw a revival of interest in classical learning. |
| 22 | erode | To gradually destroy or diminish | Time has eroded the original details of the stone carvings. |
| 23 | evoke | To bring a feeling or memory to mind | The painting evokes a sense of calm and tranquility. |
| 24 | excerpt | A short extract from a larger work | The teacher read an excerpt from the novel. |
| 25 | folklore | Traditional beliefs and stories of a community | The region's folklore includes tales of mythical creatures. |
| 26 | genre | A category of artistic composition | The novel belongs to the genre of historical fiction. |
| 27 | heritage | Valued traditions passed between generations | UNESCO protects sites of outstanding cultural heritage. |
| 28 | illuminate | To light up; to clarify or explain | The documentary illuminates the lives of Renaissance artists. |
| 29 | interpret | To explain the meaning of | Scholars interpret the text differently based on historical context. |
| 30 | legacy | Something handed down from the past | The philosopher's legacy continues to influence modern thought. |
| 31 | manuscript | A handwritten or typed document | The original manuscript was discovered in a monastery library. |
| 32 | medieval | Relating to the Middle Ages | Medieval literature often explored themes of honor and faith. |
| 33 | metaphor | A figure of speech comparing unlike things | The poet used the river as a metaphor for the passage of time. |
| 34 | motif | A recurring theme or design | The motif of light and darkness appears throughout the novel. |
| 35 | narrative | A spoken or written account of events | The narrative follows three generations of one family. |
| 36 | nuance | A subtle difference in meaning | Understanding cultural nuance is essential for accurate translation. |
| 37 | obscure | Not well known; difficult to understand | The reference to an obscure historical event confused readers. |
| 38 | paradox | A seemingly contradictory statement that reveals truth | The paradox of choice suggests that more options can lead to less satisfaction. |
| 39 | perspective | A particular way of viewing things | The historian examined events from the perspective of ordinary citizens. |
| 40 | philosophical | Relating to the study of fundamental questions | The novel raises philosophical questions about free will. |
| 41 | pioneer | A person who is among the first to explore | She was a pioneer in the field of documentary filmmaking. |
| 42 | prevalent | Widespread; commonly occurring | The theme of exile is prevalent in 20th-century literature. |
| 43 | profound | Very great or intense; deeply insightful | The discovery had a profound impact on the study of ancient cultures. |
| 44 | prose | Ordinary written or spoken language | The author is known for her clear, elegant prose. |
| 45 | rhetoric | The art of effective or persuasive speaking | Political rhetoric often simplifies complex issues. |
| 46 | satire | The use of humor to criticize | The play is a satire of modern consumer culture. |
| 47 | symbolism | The use of symbols to represent ideas | The use of color symbolism is prominent in the artist's later works. |
| 48 | theme | A central topic or idea | The theme of identity runs throughout the author's novels. |
| 49 | tradition | A custom or belief passed through generations | Oral storytelling is an important tradition in many cultures. |
| 50 | vernacular | The language spoken by ordinary people | Dante wrote The Divine Comedy in the Italian vernacular rather than Latin. |
Business & Economics (50 Words)
| # | Word | Definition | Example Sentence |
|---|---|---|---|
| 1 | acquisition | The act of gaining possession | The company's acquisition of its rival created a market leader. |
| 2 | aggregate | A whole formed by combining elements | Aggregate demand measures total spending in an economy. |
| 3 | allocate | To distribute for a particular purpose | The board allocated resources to the most profitable divisions. |
| 4 | assess | To evaluate or estimate | Analysts assess the risk of each investment opportunity. |
| 5 | asset | A useful or valuable thing or person | Real estate is considered a tangible asset. |
| 6 | audit | An official inspection of accounts | The annual audit revealed no financial irregularities. |
| 7 | commodity | A raw material or primary agricultural product | Oil is one of the most traded commodities in the world. |
| 8 | compensation | Something given in recognition of loss or service | Employee compensation includes salary, benefits, and bonuses. |
| 9 | competitive | Relating to or characterized by competition | The company maintains a competitive advantage through innovation. |
| 10 | consolidate | To combine into a single more effective whole | The merger consolidated two major airlines into one. |
| 11 | consumer | A person who purchases goods and services | Consumer confidence drives spending in the retail sector. |
| 12 | currency | A system of money in general use | The national currency depreciated against the dollar. |
| 13 | deficit | The amount by which spending exceeds revenue | The government aims to reduce the budget deficit by 2028. |
| 14 | depreciate | To diminish in value over time | Vehicles depreciate significantly in their first year. |
| 15 | diversify | To vary or expand the range of products | The company diversified into renewable energy markets. |
| 16 | dividend | A sum of money paid regularly to shareholders | The board announced a quarterly dividend of $0.50 per share. |
| 17 | enterprise | A business or company | Small enterprises account for the majority of job creation. |
| 18 | equity | The value of shares issued by a company | The startup raised equity funding from venture capitalists. |
| 19 | expenditure | The action of spending funds | Government expenditure on education increased by 12%. |
| 20 | fiscal | Relating to government revenue and spending | Fiscal policy plays a key role in economic stability. |
| 21 | forecast | A prediction about the future | Economic forecasts predict steady growth for the next quarter. |
| 22 | inflation | A general increase in prices | Inflation erodes the purchasing power of consumers. |
| 23 | inventory | A complete list of items in stock | The retailer reduced inventory to cut storage costs. |
| 24 | invest | To put money into something for profit | The fund invested heavily in technology startups. |
| 25 | liability | A debt or obligation | The company's liabilities exceeded its assets. |
| 26 | margin | The difference between cost and selling price | Profit margins improved after the restructuring. |
| 27 | merger | The combining of two organizations into one | The merger created the largest bank in the region. |
| 28 | monopoly | Exclusive control of a market | Antitrust laws aim to prevent monopoly in essential industries. |
| 29 | negotiate | To discuss terms to reach an agreement | The two countries negotiated a new trade agreement. |
| 30 | outsource | To obtain goods or services from an outside supplier | Many companies outsource manufacturing to reduce costs. |
| 31 | portfolio | A range of investments held by a person or organization | A diversified portfolio reduces overall investment risk. |
| 32 | procurement | The process of obtaining goods or services | The procurement department manages all supplier contracts. |
| 33 | profit | Financial gain from business activity | Net profit increased by 15% compared to the previous year. |
| 34 | quota | A limited quantity of a product | Import quotas protect domestic industries from foreign competition. |
| 35 | recession | A period of economic decline | The 2008 recession affected economies around the world. |
| 36 | regulate | To control by means of rules | Government agencies regulate the financial services industry. |
| 37 | retail | The sale of goods to the public | Online retail has grown dramatically in the past decade. |
| 38 | revenue | Income, especially from business activities | Annual revenue reached $5 billion for the first time. |
| 39 | sector | A distinct part of an economy | The technology sector has driven economic growth in many countries. |
| 40 | subsidy | A sum of money granted by the government | Agricultural subsidies support farmers during difficult seasons. |
| 41 | surplus | An amount beyond what is needed | The trade surplus indicates exports exceeded imports. |
| 42 | tariff | A tax on imported goods | New tariffs increased the cost of imported steel. |
| 43 | transaction | An instance of buying or selling | Digital payment systems have simplified financial transactions. |
| 44 | utility | The state of being useful; a public service | Utility companies provide electricity, gas, and water. |
| 45 | venture | A risky business enterprise | The joint venture combined expertise from both companies. |
| 46 | volatile | Liable to change rapidly and unpredictably | Stock markets are more volatile during times of uncertainty. |
| 47 | wholesale | The selling of goods in large quantities | Wholesale prices for raw materials have risen sharply. |
| 48 | yield | The amount produced; return on investment | The bond yields 3.5% annually. |
| 49 | benchmark | A standard against which things are measured | The S&P 500 serves as a benchmark for U.S. stock performance. |
| 50 | stakeholder | A person with an interest in a business | All stakeholders were consulted before the decision was finalized. |
Study Strategies
Flashcard Method
Create flashcards with the word on one side and definition + example on the other. Review daily using spaced repetition:
- • Day 1: Learn 20 new words
- • Day 2: Review Day 1 + learn 20 new
- • Day 4: Review Day 1 + Day 2
- • Day 7: Review all previous words
Context Reading
The best way to learn vocabulary is through reading. Each day:
- • Read one academic article (science, history, etc.)
- • Underline words from this list when you encounter them
- • Note any new words not on this list
- • Write a summary using 3-5 vocabulary words
Word Family Expansion
Learn multiple forms of each word to maximize your vocabulary:
- • analyze → analysis, analytical, analyst
- • regulate → regulation, regulatory, regulator
- • innovate → innovation, innovative, innovator
- • This triples your effective vocabulary
Complete the Words Practice
Practice spelling these words with partial clues:
- • Cover part of the word and try to complete it
- • Write each word 3 times from memory
- • Focus on commonly misspelled words
- • Practice with a partner who gives you partial words
References & Further Reading
- Academic Word List — Victoria University of Wellington (Accessed: February 2026)
- TOEFL iBT 2026 Reading Section — ETS Official Website (Accessed: February 2026)
- TOEFL iBT Reading Preparation — ETS TOEFL Preparation (Accessed: February 2026)
External links open in a new tab. Writing30 is not affiliated with the linked sources.
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Social Sciences (50 Words)