Why Vocabulary Is Worth 25% of Your IELTS Writing Score
Lexical Resource is one of four equally weighted criteria in IELTS Writing Task 2, each accounting for 25% of your band score. At Band 7, the descriptor requires “sufficient range of vocabulary to allow some flexibility and precision.” At Band 9, it demands “full flexibility and precision in all contexts.” The practical implication: upgrading your vocabulary from common to academic is one of the highest-return investments you can make in your preparation.
This guide covers the five topic areas that appear most frequently in Task 2 exams — education, technology, environment, health, and crime — alongside linking words, academic phrase patterns, and hedging language. Internalising these categories removes the need to search for words under exam pressure and frees your cognitive attention for argumentation and essay structure. Note that a strong vocabulary base also pays dividends in the Speaking test — the IELTS Speaking vocabulary guide shares many of the same academic collocations in a spoken-language context.
Topic Vocabulary: Education
Education-related prompts appear in roughly 25% of Task 2 exams, making this the most productive topic category to master first (British Council IELTS Preparation resources, 2024).
Key terms and academic alternatives
| Common word | Academic alternative | Example use |
|---|---|---|
| school | educational institution / learning establishment | “… attending educational institutions from an early age …” |
| learn | acquire knowledge / develop competencies | “… acquire the critical thinking competencies required …” |
| teacher | educator / instructor / academic | “… skilled educators who can adapt to diverse learning needs …” |
| exam | standardised assessment / summative evaluation | “… replace summative evaluations with portfolio-based methods …” |
| university | higher education institution / tertiary institution | “… enrolled in tertiary institutions at record rates …” |
High-value education collocations
- academic attainment / underachievement
- curriculum reform / curriculum overhaul
- vocational training / vocational pathways
- critical thinking skills / analytical reasoning
- lifelong learning / continuing professional development
- educational inequality / achievement gap
- rote memorisation vs. conceptual understanding
Topic Vocabulary: Technology
Technology topics frequently intersect with employment, privacy, and social change. Mastering language that distinguishes between different dimensions of technology prevents repetitive phrasing.
Key terms and academic alternatives
| Common word | Academic alternative | Example use |
|---|---|---|
| computer / phone | digital device / smart technology | “… proliferation of smart technology in daily life …” |
| use | utilise / adopt / deploy / leverage | “… deploying automation in manufacturing processes …” |
| internet | digital infrastructure / online platforms / cyberspace | “… access to digital infrastructure remains unequal globally …” |
| robots / AI | automation / artificial intelligence / algorithmic systems | “… as algorithmic systems replace routine cognitive tasks …” |
| social media | social networking platforms / online communities | “… the behavioural effects of social networking platforms …” |
High-value technology collocations
- technological advancement / rapid technological change
- digital literacy / digital divide
- data privacy / surveillance capitalism
- automation of labour / technological unemployment
- disruptive innovation / emerging technologies
- cybersecurity threats / data breaches
Topic Vocabulary: Environment
Environmental topics require precise scientific vocabulary. Imprecise language — using “pollution” to mean both air pollution and climate change — signals limited Lexical Resource to the examiner.
Key terms and academic alternatives
| Common word | Academic alternative | Example use |
|---|---|---|
| global warming | anthropogenic climate change / rising global temperatures | “… the consequences of anthropogenic climate change …” |
| rubbish / waste | non-biodegradable waste / municipal solid waste | “… the accumulation of non-biodegradable waste in marine ecosystems …” |
| cutting down trees | deforestation / forest degradation | “… accelerated deforestation in tropical regions …” |
| clean energy | renewable energy sources / low-carbon alternatives | “… transitioning to renewable energy sources …” |
| damage to nature | biodiversity loss / ecological degradation | “… irreversible biodiversity loss in fragile ecosystems …” |
High-value environment collocations
- carbon emissions / carbon footprint / net-zero targets
- environmental sustainability / sustainable development
- fossil fuel dependency / energy transition
- marine pollution / plastic contamination
- greenhouse gas concentrations / atmospheric warming
- conservation efforts / habitat preservation
Topic Vocabulary: Health
Key terms and academic alternatives
| Common word | Academic alternative | Example use |
|---|---|---|
| fat / overweight | obese / overweight / clinically overweight | “… the rising prevalence of obesity in industrialised nations …” |
| sick | afflicted / suffering from / experiencing morbidity | “… populations afflicted by preventable chronic disease …” |
| doctor | healthcare professional / medical practitioner | “… access to qualified healthcare professionals …” |
| mental health problems | psychological disorders / mental health conditions | “… the increasing incidence of anxiety-related psychological disorders …” |
| medicine / drug | pharmaceutical intervention / pharmacological treatment | “… reliance on pharmacological treatment rather than lifestyle modification …” |
High-value health collocations
- public health infrastructure / healthcare systems
- preventable mortality / life expectancy
- sedentary lifestyle / physical inactivity
- nutritional deficiency / dietary habits
- mental health awareness / psychological well-being
- healthcare expenditure / health outcomes
Topic Vocabulary: Crime and Society
Key terms and academic alternatives
| Common word | Academic alternative | Example use |
|---|---|---|
| crime | criminal activity / unlawful behaviour / offending | “… the underlying drivers of criminal activity in urban areas …” |
| prison | custodial sentence / incarceration / penal institution | “… high rates of recidivism following custodial sentences …” |
| punishment | punitive measures / deterrents / sanctions | “… the effectiveness of punitive measures as deterrents …” |
| police | law enforcement agencies / policing authorities | “… increased investment in community-based policing …” |
| poor | economically disadvantaged / socioeconomically marginalised | “… socioeconomically marginalised communities face disproportionate risk …” |
High-value crime collocations
- recidivism rates / rehabilitation programmes
- socioeconomic inequality / poverty-crime nexus
- juvenile delinquency / youth offending
- deterrence vs. rehabilitation
- community policing / restorative justice
- organised crime / white-collar crime
Linking Words and Discourse Markers
Cohesive devices account for a significant portion of the Coherence and Cohesion criterion. Overusing “however,” “also,” and “furthermore” is a Band 6 characteristic. High-scoring responses use a wider variety, including clause-level connectors and discourse markers that signal logical relationships precisely. For the complete set of strategies that examiners reward at Band 8–9, see the Task 2 tips guide, which covers linking language in the context of the full writing process. Candidates preparing for the Reading test will also find that strong academic vocabulary aids comprehension of IELTS Reading passages, since the lexis in Task 2 model answers closely mirrors the register of academic reading texts.
Adding information
- Furthermore, … / Moreover, …
- In addition to this, …
- Compounding this, …
- A further consideration is …
- Equally significant is …
Contrasting
- However, … / Nevertheless, …
- On the other hand, …
- Conversely, …
- In contrast to this, …
- Despite this, … / Notwithstanding this, …
Showing cause and effect
- As a consequence, …
- This results in …
- … thereby causing …
- Consequently, …
- This can be attributed to …
Introducing examples
- For instance, …
- To illustrate this point, …
- A case in point is …
- This is evident in …
- As demonstrated by …
Concluding
- In conclusion, … / To summarise, …
- On balance, …
- Taking all factors into account, …
- It is clear, therefore, that …
Academic Phrase Patterns
Academic phrase patterns are reusable sentence-level structures that can be applied across topic areas. Unlike topic vocabulary (which is topic-specific), these patterns transfer directly to any prompt.
| Function | Phrase pattern |
|---|---|
| Stating a trend | “There has been a marked increase in … over the past decade.” |
| Attributing causation | “This phenomenon can largely be attributed to …” |
| Quantifying significance | “… accounts for a disproportionate share of …” |
| Proposing a solution | “One effective measure would be to … , which would address … by …” |
| Citing evidence | “Research conducted by [institution] indicates that …” |
| Acknowledging complexity | “The issue is, however, more nuanced than it initially appears.” |
| Making a conditional argument | “Provided that … is in place, … is likely to produce …” |
Hedging Language
Hedging — the use of language that qualifies claims rather than stating them as absolute — is a marker of academic maturity. It signals to the examiner that you understand the limits of your evidence and can argue with appropriate epistemic caution. At Band 8–9, hedging appears naturally throughout an essay rather than being confined to one formulaic phrase.
Modal verbs for hedging
- … may lead to … / … might result in …
- … could be attributed to …
- … would appear to suggest …
- … tends to indicate …
Adverb hedges
- … arguably …
- … in many cases …
- … to a significant extent …
- … generally speaking …
Reporting verb hedges
- Research suggests that …
- Evidence indicates that …
- Studies have found that …
- It has been argued that …
Words and Phrases to Avoid
Certain vocabulary choices consistently mark a response as informal, imprecise, or low-register — regardless of the argument quality. Examiners at Band 7 and above note these patterns under Lexical Resource.
| Avoid | Use instead |
|---|---|
| “Nowadays” (used in every sentence) | “In recent decades,” / “In contemporary society,” |
| “It is a well-known fact that” | State the fact directly, or cite a source |
| “In today’s modern world” | Any specific context marker: “In highly industrialised nations, …” |
| “Pros and cons” | “Advantages and disadvantages” / “benefits and drawbacks” |
| “A lot of / lots of” | “A significant number of” / “a considerable proportion of” |
| “Things” | Name the specific entity: “factors,” “measures,” “challenges” |