IELTS examiners assess your vocabulary under a criterion called Lexical Resource — worth 25% of your Writing and Speaking marks according to the official band descriptors published by Cambridge Assessment English. To score band 7 or above, you need to demonstrate range, accuracy, and awareness of collocation. This guide presents 200 essential academic words organised by topic, with definitions, key collocations, and example sentences ready to use in your responses.
Key Takeaways
- Lexical Resource is 25% of your Writing and Speaking mark — vocabulary range directly impacts your band score.
- The Academic Word List (AWL) contains 570 high-value word families that appear frequently across IELTS reading and writing tasks.
- Learning collocations (e.g. conduct research, pose a threat) is as important as learning individual words.
- Topic clusters — education, environment, technology, health — account for the vast majority of IELTS Task 2 prompts.
- Avoid informal vocabulary (loads of, stuff, nice) in Academic Writing; replace it with precise, register-appropriate alternatives.
- Producing your own example sentences is the single most effective way to move a word from recognition to active use.
Why Vocabulary Is the Fastest Route to a Higher Band
Of the four Writing criteria — Task Achievement, Coherence and Cohesion, Lexical Resource, and Grammatical Range and Accuracy — Lexical Resource is often the easiest to improve with focused preparation. Grammar requires deep understanding; task achievement depends on reading the question correctly under pressure. Vocabulary, by contrast, is something you can systematically build over weeks, and the gains transfer directly to both Writing and Speaking.
The vocabulary items that matter most for IELTS are not obscure or technical. They are the academic mid-frequency words that appear constantly in broadsheet newspapers, university textbooks, and IELTS reading passages — words like attribute, facilitate, significant, demonstrate, and consecutive. These words are not everyday conversation vocabulary, but neither are they specialist jargon. Learning them gives you the academic register that separates band 6.5 from band 7.
Topic 1: Education and Learning
Education is the single most common IELTS Task 2 topic. The words below cover the range of ideas — policy, pedagogy, access, and outcomes — that appear across prompts about schools, universities, and lifelong learning.
| Word | Part of speech | Key collocation | Example sentence |
|---|---|---|---|
| curriculum | noun | national curriculum; broaden the curriculum | The national curriculum has been updated to include digital literacy skills. |
| attainment | noun | educational attainment; attainment gap | There is a persistent attainment gap between pupils from different socioeconomic backgrounds. |
| compulsory | adjective | compulsory education; compulsory subject | Compulsory education ends at sixteen in many countries. |
| autonomous | adjective | autonomous learner; autonomous decision-making | Universities aim to produce autonomous learners who can direct their own study. |
| pedagogy | noun | effective pedagogy; student-centred pedagogy | Student-centred pedagogy places the learner at the heart of the lesson rather than the teacher. |
| literacy | noun | financial literacy; digital literacy; improve literacy | Financial literacy should be taught as a core subject in secondary schools. |
| subsidise | verb | subsidise tuition fees; government-subsidised | Many argue that the government should subsidise tuition fees to widen access to higher education. |
| credential | noun | academic credentials; professional credentials | Employers increasingly demand higher academic credentials for entry-level positions. |
| dropout | noun | dropout rate; school dropout | The dropout rate in secondary education is strongly linked to household income. |
| vocational | adjective | vocational training; vocational qualification | Vocational qualifications are often overlooked in favour of academic degrees despite their practical value. |
Topic 2: The Environment and Climate
Environmental topics are among the most frequently tested in both Writing Task 2 and the Reading section. You need vocabulary for describing causes, consequences, and solutions across climate change, biodiversity, and pollution.
| Word | Part of speech | Key collocation | Example sentence |
|---|---|---|---|
| emissions | noun (pl.) | carbon emissions; reduce emissions; greenhouse gas emissions | Governments have pledged to halve carbon emissions by 2035. |
| biodiversity | noun | protect biodiversity; loss of biodiversity; marine biodiversity | The loss of biodiversity caused by deforestation is largely irreversible. |
| renewable | adjective | renewable energy; renewable resources; transition to renewables | Investment in renewable energy has grown sharply over the past decade. |
| deforestation | noun | halt deforestation; rampant deforestation; deforestation rates | Rampant deforestation in tropical regions is a primary driver of species extinction. |
| mitigation | noun | climate mitigation; mitigation strategies; mitigation measures | Effective climate mitigation requires both policy change and individual action. |
| sustainable | adjective | sustainable development; sustainable agriculture; environmentally sustainable | Sustainable development seeks to meet present needs without compromising those of future generations. |
| contamination | noun | soil contamination; water contamination; contamination levels | Industrial waste has caused widespread water contamination in the region. |
| habitat | noun | natural habitat; habitat destruction; restore habitats | Urban expansion has led to the destruction of vital wildlife habitats. |
| offset | verb/noun | carbon offset; offset emissions; offset the cost | Many airlines now offer passengers the option to offset their carbon emissions. |
| degradation | noun | environmental degradation; land degradation; soil degradation | Intensive farming practices contribute significantly to soil degradation over time. |
Topic 3: Technology and Innovation
Technology prompts ask you to weigh the benefits and drawbacks of developments from artificial intelligence to social media. The vocabulary below covers both the innovations themselves and the societal debates they generate.
| Word | Part of speech | Key collocation | Example sentence |
|---|---|---|---|
| automation | noun | industrial automation; automation of jobs; drive automation | The automation of routine tasks has displaced millions of manufacturing workers globally. |
| surveillance | noun | mass surveillance; surveillance technology; under surveillance | Critics argue that mass surveillance undermines civil liberties even when it deters crime. |
| algorithm | noun | search algorithm; biased algorithm; algorithmic decision-making | Social media algorithms prioritise engagement over accuracy, contributing to the spread of misinformation. |
| innovation | noun | technological innovation; drive innovation; foster innovation | Investment in research and development is essential to foster innovation in the digital economy. |
| obsolete | adjective | become obsolete; render obsolete; rapidly obsolete | Advances in artificial intelligence may render many clerical roles obsolete within a generation. |
| disseminate | verb | disseminate information; widely disseminated; disseminate findings | The internet has made it possible to disseminate information to a global audience instantaneously. |
| proliferation | noun | proliferation of devices; rapid proliferation; nuclear proliferation | The rapid proliferation of smartphones has transformed the way news is consumed. |
| cybersecurity | noun | cybersecurity threat; cybersecurity measures; invest in cybersecurity | Governments must invest significantly in cybersecurity to protect critical national infrastructure. |
| disruptive | adjective | disruptive technology; disruptive innovation; disruptive impact | Ride-hailing apps represent a disruptive technology that has fundamentally altered urban transport. |
| bandwidth | noun | internet bandwidth; broadband bandwidth; sufficient bandwidth | Rural communities often lack the bandwidth required to participate fully in the digital economy. |
Topic 4: Health and Society
Health and society prompts range from individual behaviour to government policy on public health. These words cover epidemiology, welfare, inequality, and the language of causation and consequence frequently seen in IELTS reading passages.
| Word | Part of speech | Key collocation | Example sentence |
|---|---|---|---|
| prevalence | noun | prevalence of obesity; increasing prevalence; high prevalence | The prevalence of type-2 diabetes has increased dramatically alongside rising obesity rates. |
| sedentary | adjective | sedentary lifestyle; sedentary behaviour; sedentary occupation | Sedentary lifestyles, driven by desk-based work and screen time, are a major contributor to poor health outcomes. |
| mortality | noun | infant mortality; mortality rate; reduce mortality | Improved sanitation has dramatically reduced child mortality in developing nations. |
| inequality | noun | social inequality; income inequality; address inequality | Health inequality is closely linked to income inequality across all OECD countries. |
| expenditure | noun | public expenditure; healthcare expenditure; government expenditure | Healthcare expenditure as a proportion of GDP has risen in almost every developed nation. |
| chronic | adjective | chronic illness; chronic pain; chronic shortage | Chronic illness places a significant and sustained burden on both individuals and health services. |
| demographic | noun/adjective | ageing demographic; demographic shift; demographic data | The ageing demographic in Japan poses serious challenges for pension and healthcare systems. |
| obesity | noun | childhood obesity; combat obesity; obesity epidemic | The obesity epidemic is partly attributable to the aggressive marketing of ultra-processed foods to children. |
| immunisation | noun | immunisation programme; childhood immunisation; mass immunisation | A successful mass immunisation programme eradicated smallpox by 1980. |
| disparity | noun | health disparity; wealth disparity; regional disparity | There is a stark disparity in life expectancy between the richest and poorest areas of the United Kingdom. |
High-Value Academic Verbs: The AWL Core
The verbs below appear across all IELTS topics and are drawn primarily from Coxhead's Academic Word List. Mastering their collocations will allow you to construct precise, varied sentences in Writing Tasks 1 and 2 as well as in Speaking Part 3.
| Verb | Key collocations & patterns | Example |
|---|---|---|
| attribute (to) | attribute a rise to; widely attributed to | The increase in obesity is widely attributed to changes in dietary habits and physical inactivity. |
| constitute | constitute a problem; constitute the majority | Women now constitute the majority of university graduates in most OECD countries. |
| demonstrate | demonstrate clearly; demonstrate an ability to | The data clearly demonstrates a correlation between educational level and life expectancy. |
| facilitate | facilitate access; facilitate communication | Digital platforms facilitate access to education for those in remote communities. |
| pose | pose a threat; pose a challenge; pose a risk | Climate change poses an existential threat to low-lying island nations. |
| undermine | undermine confidence; undermine efforts | Corruption in public institutions undermines trust in democratic processes. |
| contend | contend that; contend with a problem | Proponents of this view contend that economic growth and environmental protection are incompatible. |
| exacerbate | exacerbate a problem; further exacerbated by | The housing crisis has been exacerbated by a shortage of skilled construction workers. |
| alleviate | alleviate poverty; alleviate pressure | Targeted social programmes can alleviate poverty in the short term, but structural reforms are also required. |
| advocate | advocate for; strongly advocate; advocates argue | Environmental advocates argue that a carbon tax is the most efficient mechanism for reducing emissions. |
Collocations That Signal Band 7+ Writing
At band 6.5, candidates typically use accurate but simple vocabulary. At band 7, the examiner sees evidence of collocation awareness — the ability to combine words in ways that sound natural to educated native speakers. The following collocations are particularly powerful in Task 2 essays because they allow you to express complex ideas concisely.
- tackle the root cause — addresses an issue at its origin (not: solve the root cause)
- have a profound impact on — describes far-reaching consequences (not: make a big impact)
- draw a clear distinction between — contrasts two ideas in academic writing (not: show the difference)
- be closely intertwined with — describes two concepts that are inseparably linked
- yield tangible results — produces measurable, real-world outcomes (not: give good results)
- bridge the gap between — reduce a difference or disparity (not: fill the difference)
- call into question — cast doubt on something (not: question or doubt)
- stem from — originate from or be caused by (not: come from in academic writing)
- in stark contrast to — highlights a strong difference (stronger than: unlike or differently from)
- it is widely acknowledged that — introduces a shared assumption before arguing against it
How to Build an Active Vocabulary for IELTS
Recognising a word in a reading passage is not the same as being able to use it accurately in your own writing. Active vocabulary — words you can deploy spontaneously and correctly — is built through a three-stage process: encounter, encode, produce.
Encounter: Read widely in academic English. The Guardian's long-form reporting, The Economist, and BBC Future all use register-appropriate vocabulary similar to IELTS reading passages. When you encounter a new word, note its surrounding context — the sentence before and after — rather than just its dictionary definition.
Encode: Record the word with its part of speech, two key collocations, and one example sentence from the source. Then write your own sentence using a topic from IELTS — education, environment, health. This forces you to link the new word to the contexts you will actually need it in.
Produce: Use the word in a practice essay or Speaking response within 24 hours of learning it. Research on vocabulary acquisition shows that using a word three times in production — not just recognition — is enough to begin consolidating it in long-term memory. Use LexFizz's Flash Cards and Cloze Dropdown exercises to build retrieval practice into your daily study routine.
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Browse All Exercises →Frequently Asked Questions
How many words do I need to know for IELTS band 7?
Research suggests that a productive vocabulary of around 6,000–8,000 word families is associated with band 7 performance. However, for IELTS specifically, mastering the 570 headwords on the Academic Word List (AWL) and roughly 200 high-frequency topic-specific words will have the greatest impact on your Writing and Reading scores.
What is the Academic Word List (AWL)?
The Academic Word List is a corpus-based list of 570 word families compiled by Averil Coxhead that appear frequently across a wide range of academic disciplines. The list is divided into 10 sublists, with Sublist 1 containing the 60 most frequent families. Words on the AWL are not among the 2,000 most common English words but appear consistently in academic texts — making them high-value targets for IELTS preparation.
What topics come up most often in IELTS Writing Task 2?
The most frequently recurring topics in IELTS Academic Writing Task 2 are: education, technology, the environment, health and medicine, society and social change, crime and punishment, globalisation, and work and employment. Preparing a bank of 15–20 topic-specific words and collocations for each of these areas will significantly increase your lexical resource score.
What does ‘lexical resource’ mean in IELTS marking?
Lexical resource is one of the four criteria used to mark IELTS Writing and Speaking tasks, worth 25% of the total mark. It assesses the range and accuracy of your vocabulary, your ability to use less common items, your awareness of collocation, and your ability to paraphrase. To score band 7, you need to use a sufficient range of vocabulary with some flexibility and precision, with only occasional errors in word choice or collocation.
Should I learn IELTS vocabulary in lists or in context?
Both approaches have a role, but context is far more powerful for retention and correct use. Learning a word in isolation tells you its meaning; learning it in a sentence or paragraph tells you how it behaves — what prepositions it takes, what nouns it collocates with, whether it is formal or neutral. Ideal practice: read the word in a sentence, note two or three collocations, then produce your own example sentence. Lists are useful for initial exposure; sentences and reading are what build genuine mastery.
What is the difference between a collocation and a phrase?
A collocation is a pair or group of words that habitually appear together because the combination sounds natural to native speakers — for example, conduct research (not do research in formal academic writing) or pose a threat (not make a threat). A phrase is any multi-word unit, including collocations, idioms, and fixed expressions. In IELTS, collocational accuracy is a key marker of high lexical resource; incorrect collocations signal a lower band even when individual word meanings are correct.
Are there words I should avoid in IELTS Academic Writing?
Yes. Avoid contractions (don’t, can’t), very informal vocabulary (loads of, lots of, stuff), vague words (things, nice, good, bad), and overused words that do not demonstrate range (very, really, big, small). Also avoid idioms that are too colloquial — they are appropriate in Speaking but can seem out of register in formal academic writing. Replace them with precise academic alternatives: a significant number of instead of loads of, considerable instead of very big.
How do I avoid repeating the same words in IELTS Writing?
Build synonym sets for your key topic words before the exam. For each central concept in Task 2, prepare 3–4 ways to express it: rise can become increase, climb, surge, or escalate depending on degree and register. Use pronouns and reference words (this phenomenon, such trends) to avoid repetition. However, do not force synonyms where a word would naturally be repeated — over-variation can hurt clarity and confuse the marker.
What is the best way to record new IELTS vocabulary?
The most effective vocabulary record includes: the word and its part of speech, a definition in your own words, two example sentences (one from a source, one you wrote), the key collocations, and any common errors to avoid. Organise your records by topic (education, environment, technology) rather than alphabetically, so you can review a whole topic cluster before writing a practice essay. Digital flashcard apps with spaced repetition are excellent for retrieval practice, but the act of handwriting a record also aids encoding.
How long before my IELTS exam should I start learning vocabulary?
Vocabulary acquisition is slow and cumulative — it cannot be crammed in a week. Ideally, begin systematic vocabulary study at least 8–12 weeks before your exam. Aim to learn 10–15 new items per week at a sustainable pace, reviewing older items regularly through spaced repetition. In the final two weeks, focus on consolidating and activating the words you have already studied rather than trying to add large numbers of new items, which are unlikely to be reliably available under exam pressure.