# Ielts Vocabulary Builder

> Build, drill, and apply IELTS-relevant vocabulary for Writing, Speaking, and Reading. Use this skill when the user wants to learn topic-specific vocabulary for a particular IELTS theme (environment, technology, education, health, society, economy, crime, media, etc.), improve word choice in their Writing or Speaking responses, learn academic collocations and word families, practise using less common vocabulary naturally, or understand the difference between informal and academic register. Also use when the user asks for synonyms to avoid repetition, wants to build their Academic Word List knowledge, or needs vocabulary for a specific IELTS topic they are about to write or speak about.

- Skill: `jurgendn/ielts-vocabulary-builder` (Agent Skill)
- Install (CLI): `npx skillmds@latest add jurgendn/ielts-vocabulary-builder`
- Raw SKILL.md: https://api.skillmd.com/api/skills/jurgendn/ielts-vocabulary-builder/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Docs & Writing
- Author: jurgendn (https://skillmd.com/u/jurgendn)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/jurgendn/ielts-vocabulary-builder

---


# IELTS Vocabulary Builder

Vocabulary is assessed in Writing (Lexical Resource) and Speaking (Lexical Resource) and is implicitly tested in Reading (understanding paraphrased vocabulary). Band 7+ requires less common, precise vocabulary used accurately; Band 8+ requires idiomatic or sophisticated control with only rare errors.

## Use this when

- The user wants vocabulary for a specific IELTS topic before writing or speaking.
- The user wants to replace repetitive or basic words in their essay or spoken answer.
- The user asks for collocations, word families, or synonyms for a concept.
- The user wants to understand register differences (informal vs. academic vs. journalistic).
- The user wants to practise a topic's vocabulary through gap-fill, example sentences, or recall drills.

## Do not use this when

- The user needs full essay or speaking feedback — use `ielts-writing-task2` or `ielts-speaking-coach`.
- The user is asking about grammar structures — vocabulary and grammar are separate axes on the band scale.

---

## How Vocabulary is Assessed

### Writing — Lexical Resource (LR)

| Band | What it looks like |
|------|-------------------|
| 9 | Natural, sophisticated control; rare slips only; wide range |
| 8 | Wide range fluently used; uncommon items used skillfully; rare spelling/word-form errors |
| 7 | Sufficient range for flexibility and precision; less common items with awareness of collocation; occasional errors |
| 6 | Adequate range; attempts less common vocabulary with some inaccuracy; some spelling/word-form errors but meaning clear |
| 5 | Limited but minimally adequate; noticeable errors may cause difficulty |
| 4 | Basic vocabulary only; repetitive or inappropriate; errors cause strain |

### Speaking — Lexical Resource (LR)

| Band | What it looks like |
|------|-------------------|
| 9 | Full flexibility and precision across all topics; idiomatic language natural and accurate |
| 8 | Wide vocabulary readily used; less common and idiomatic items with some style awareness; effective paraphrase |
| 7 | Flexible use across topics; less common and idiomatic items; effective paraphrase |
| 6 | Wide enough to discuss topics at length; meaning clear despite some inappropriacies; generally paraphrases successfully |
| 5 | Limited flexibility; attempts paraphrase with mixed success |
| 4 | Basic meaning on familiar topics only; frequent word choice errors; rarely paraphrases |

---

## Core Principles

### 1. Collocation over isolated synonyms

Do not swap single words without checking the whole phrase. Wrong collocations lower the LR score even if each word exists in English.

| Weak (wrong collocation) | Strong (correct collocation) |
|--------------------------|------------------------------|
| make a crime | commit a crime |
| strong solution | effective solution |
| big importance | great importance |
| do a decision | make a decision |
| rise up | increase / rise |

### 2. Word families

Knowing the noun, verb, adjective, and adverb forms of a word gives range and helps with sentence variety.

| Noun | Verb | Adjective | Adverb |
|------|------|-----------|--------|
| environment | — | environmental | environmentally |
| innovation | innovate | innovative | innovatively |
| significance | signify | significant | significantly |
| employment | employ | employed / unemployed | — |
| education | educate | educational | educationally |

### 3. Register awareness

IELTS Writing requires formal/academic register. Speaking allows semi-formal to formal.

| Informal | Formal / Academic |
|----------|------------------|
| get better | improve / recover |
| go up | increase / rise / surge |
| kids | children / young people |
| a lot of | a considerable number of / numerous |
| really important | crucial / significant / vital |
| find out | discover / identify / determine |

---

## Topic Vocabulary Banks

### Environment and Climate

**Key nouns:** greenhouse gas emissions, carbon footprint, biodiversity, deforestation, renewable energy, fossil fuels, climate change, global warming, habitat destruction, ecological balance, sustainability, pollution, conservation

**Key verbs:** mitigate, exacerbate, deplete, conserve, offset, emit, generate (energy), combat (climate change), threaten (species)

**Key adjectives:** sustainable, renewable, irreversible, catastrophic, biodegradable, carbon-neutral, eco-friendly

**Useful phrases:**
- *poses a serious threat to biodiversity*
- *contributes significantly to greenhouse gas emissions*
- *transition to renewable energy sources*
- *irreversible damage to the ecosystem*
- *a growing awareness of environmental issues*

---

### Technology and Innovation

**Key nouns:** artificial intelligence, automation, algorithm, data privacy, digital divide, cybersecurity, innovation, surveillance, social media, e-commerce, biotechnology, nanotechnology

**Key verbs:** disrupt, transform, revolutionise, undermine (privacy), enhance, enable, proliferate, emerge

**Key adjectives:** cutting-edge, sophisticated, unprecedented, integral, pervasive, autonomous

**Useful phrases:**
- *rapid advances in artificial intelligence*
- *raises serious concerns about data privacy*
- *has transformed the way people communicate*
- *the digital divide between developed and developing nations*
- *over-reliance on technology*

---

### Education

**Key nouns:** curriculum, academic achievement, vocational training, literacy, critical thinking, higher education, tuition fees, pedagogy, lifelong learning, standardised testing, scholarship

**Key verbs:** cultivate, foster, equip (students with), instil, assess, broaden (horizons), pursue (a degree)

**Key adjectives:** compulsory, extracurricular, rigorous, holistic, inclusive, vocational

**Useful phrases:**
- *fosters critical thinking and creativity*
- *the quality of education varies significantly*
- *students are ill-equipped for the demands of the workplace*
- *a well-rounded education*
- *the rising cost of higher education*

---

### Health and Medicine

**Key nouns:** obesity, sedentary lifestyle, mental health, life expectancy, preventive healthcare, epidemic, chronic disease, healthcare system, nutrition, mortality rate

**Key verbs:** alleviate, exacerbate (a condition), combat (disease), diagnose, treat, monitor, promote (wellbeing)

**Key adjectives:** sedentary, preventable, chronic, acute, holistic, nutritious, detrimental

**Useful phrases:**
- *leads to a sedentary lifestyle*
- *places enormous pressure on healthcare systems*
- *a significant rise in obesity rates*
- *long-term consequences for mental health*
- *preventable diseases account for a large proportion of deaths*

---

### Society and Culture

**Key nouns:** social cohesion, inequality, urbanisation, immigration, cultural diversity, social mobility, globalisation, tradition, assimilation, demographic shift

**Key verbs:** integrate, marginalise, undermine (social cohesion), preserve (culture), erode (values), promote (diversity)

**Key adjectives:** diverse, multicultural, marginalised, cohesive, prevalent, indigenous

**Useful phrases:**
- *growing social inequality*
- *a shift towards more individualistic values*
- *preserving cultural heritage*
- *promotes social cohesion and integration*
- *the rapid pace of urbanisation*

---

### Economy and Business

**Key nouns:** GDP, inflation, unemployment, fiscal policy, trade deficit, globalisation, entrepreneurship, income inequality, labour market, foreign investment

**Key verbs:** stimulate (the economy), boost, generate (revenue), fluctuate, regulate, diversify, outsource

**Key adjectives:** economic, prosperous, volatile, sustainable (growth), thriving, stagnant

**Useful phrases:**
- *drives economic growth*
- *a widening gap between rich and poor*
- *attract foreign direct investment*
- *volatile global markets*
- *small businesses are the backbone of the economy*

---

### Crime and Law

**Key nouns:** deterrent, rehabilitation, recidivism, juvenile delinquency, white-collar crime, law enforcement, capital punishment, incarceration, corruption, cybercrime

**Key verbs:** deter, rehabilitate, prosecute, convict, enforce (the law), sentence, commit (a crime)

**Key adjectives:** punitive, rehabilitative, lenient, stringent, preventive, criminal

**Useful phrases:**
- *serves as an effective deterrent*
- *reduce recidivism rates*
- *a punitive approach to criminal justice*
- *the root causes of crime*
- *stricter law enforcement measures*

---

### Media and Communication

**Key nouns:** mass media, social media, press freedom, censorship, misinformation, digital literacy, journalism, propaganda, public opinion, algorithm (filter bubble)

**Key verbs:** disseminate (information), influence, manipulate, censor, broadcast, distort

**Key adjectives:** unbiased, sensationalist, credible, mainstream, viral, digital

**Useful phrases:**
- *the spread of misinformation online*
- *undermines press freedom*
- *shapes public opinion*
- *responsible use of social media*
- *algorithms create echo chambers*

---

### Transport and Urban Development

**Key nouns:** infrastructure, congestion, public transport, urban sprawl, emissions, pedestrianisation, carbon-neutral city, commute, traffic management

**Key verbs:** alleviate (congestion), invest in (infrastructure), expand, commute, subsidise (public transport)

**Key adjectives:** congested, sustainable, accessible, car-dependent, efficient

**Useful phrases:**
- *alleviates traffic congestion*
- *invest heavily in public transport infrastructure*
- *encourages people to use sustainable alternatives*
- *urban areas face growing congestion*
- *reduce carbon emissions from the transport sector*

---

## Academic Word List (AWL) — High-Value Items for IELTS

These appear frequently in Academic Reading passages and are expected in Band 7+ writing.

| Word | Meaning | Example use |
|------|---------|-------------|
| albeit | although | *This is effective, albeit expensive.* |
| apparent | obvious/seeming | *The apparent benefits may mask hidden costs.* |
| consequently | as a result | *Deforestation is accelerating; consequently, biodiversity is declining.* |
| constitute | make up / form | *Young people constitute the majority of the workforce.* |
| evident | clear | *It is evident that inequality has widened.* |
| facilitate | make easier | *Technology facilitates communication across borders.* |
| furthermore | in addition | *Furthermore, governments must take decisive action.* |
| hence | therefore | *Hence, stricter regulations are required.* |
| inevitable | unavoidable | *Technological disruption is inevitable.* |
| inherent | fundamental/built-in | *There are inherent risks in any new policy.* |
| nonetheless | nevertheless | *Nonetheless, progress has been made.* |
| notion | idea/concept | *The notion that growth is always beneficial is flawed.* |
| predominantly | mainly | *The region is predominantly agricultural.* |
| proportion | part/share | *A growing proportion of the population lives in cities.* |
| tend to | usually do | *Young people tend to adopt new technology faster.* |
| whereas | while/in contrast | *Developed nations waste food, whereas poorer nations face shortages.* |

---

## Workflow

### Step 1 — Identify the need

Determine:
- Topic: which IELTS theme does the user need vocabulary for?
- Skill: is this for Writing, Speaking, or Reading comprehension?
- Level: is the user trying to move from Band 5→6, 6→7, or 7→8?

### Step 2 — Deliver vocabulary in context

Always present vocabulary:
1. In a phrase or collocation, not in isolation.
2. With a model sentence showing real IELTS-style use.
3. With a note on register if relevant (e.g., "too informal for Task 2 writing").

### Step 3 — Drill if the user wants practice

Offer one of three drill formats:
- **Gap-fill:** provide a sentence with a blank; user fills in the correct word/phrase.
- **Replacement:** provide a sentence with a basic word underlined; user replaces it with a more precise alternative.
- **Free production:** give a topic and ask the user to write 2–3 sentences using target vocabulary.

### Step 4 — Feedback

When the user uses vocabulary:
- Confirm correct collocations.
- Flag incorrect collocations and provide the correct form.
- Note register mismatches (e.g., "get worse" → "deteriorate" for formal writing).
- Suggest one or two higher-band alternatives if the user is aiming for Band 7+.

---

## Common Mistakes to Flag

1. **Wrong collocation** — the most common LR error; always check the full phrase, not just the word.
2. **Over-using the same word** — IELTS rewards range; vary across synonyms and word forms.
3. **Informal vocabulary in Task 2** — "kids", "lots of", "really big" drag the LR score down.
4. **Forcing uncommon vocabulary incorrectly** — an inaccurate advanced word is worse than an accurate simple word.
5. **Spelling errors on high-frequency words** — "goverment", "enviroment", "developement" are common and penalised.
6. **Noun/verb/adjective confusion** — "It has environment damage" (wrong form) vs. "It causes environmental damage".

---

## Output format

When delivering a topic vocabulary set:
- Group by part of speech or by function (problem words / solution words / evaluation words).
- Provide a short example sentence for each key item.
- Highlight 3–5 items the user should prioritise for their current band target.

When drilling:
- Provide questions clearly numbered.
- After the user answers, give the answer key with brief explanations for any errors.

When reviewing the user's writing or speaking for vocabulary:
- Quote their text.
- Identify weak or repetitive words.
- Provide a Band 7-equivalent and a Band 8-equivalent replacement where possible.