20 Vocabulary Upgrades for IELTS Essays 

Simple swaps that raise your writing score

Preparing for IELTS Writing Task 2? You don’t need to memorise hundreds of complex words to boost your score. The most effective upgrades are simple, single-word swaps that make your writing sound more academic and precise — exactly what examiners want to see.

Lexical Resource is one of four marking criteria, and it directly affects your band score. These 20 targeted swaps will immediately improve the academic tone of your essays.

💡 Higher band vocabulary isn’t just about advanced words — it’s about accurate, specific language used naturally and flexibly.

1. agree / disagree → completely agree / partially agree

Add completely or partially before agree or disagree to show nuance.

• 🔺 “I agree that governments should invest more money in public transport.”
• ✅ “I completely agree that governments should invest more money in public transport.”
• ✅ “I partially agree that governments should invest more money in public transport.”

2. for example → alternate with for instance

Both phrases are interchangeable. Alternating between them makes your writing feel more varied and sophisticated.

• ✅ “Many people spend too much time on social media. For example, some individuals check their phones hundreds of times per day.”
• ✅ “Many people spend too much time on social media. For instance, some individuals check their phones hundreds of times per day.”

3. problem → issue

Issue sounds slightly more academic and formal — especially useful in problem and solution essays.

• 🔺 “Traffic congestion is a serious problem in large cities.”
• ✅ “Traffic congestion is a serious issue in large cities.”

4. good → beneficial

Beneficial sounds much more academic than good. A very common and safe IELTS upgrade.

• 🔺 “Exercise is good for mental health.”
• ✅ “Exercise is beneficial for mental health.”

5. bad → harmful

Harmful is more formal and precise. Note: use harmful to (not harmful for).

• 🔺 “Air pollution is bad for human health.”
• ✅ ““Air pollution is harmful to human health.”

6. think → believe

A small but effective upgrade. Believe sounds more considered and academic than think.

• 🔺 “Many people think that university education should be free.”
• ✅ “Many people believe that university education should be free.”

7. people who agree → advocates

Concise and sophisticated. Advocates = people who support something.

• 🔺 “People who agree with this idea argue that technology improves communication.”
• ✅ “Advocates argue that technology improves communication.”

8. people who disagree → critics

Concise and sophisticated. Critics = people who oppose.

• 🔺 “People who disagree with this idea argue that technology damages relationships.”
• ✅ “Critics believe that social media damages relationships.”

9. a lot of → a large proportion of

Especially useful when discussing groups of people or social trends.

• 🔺 “A lot of young people use social media every day.”
• ✅ “A large proportion of young people use social media every day.”

10. cause → result in

A strong cause-and-effect upgrade that makes writing sound more formal and academic.

• 🔺 “Long working hours can cause stress.”
• ✅ “Long working hours can result in stress.”

11. advantages → benefits

Highly interchangeable in most essays. Especially useful in advantage-disadvantage essays.

• ✅ “One advantage of studying abroad is cultural exposure.”
• ✅ “One benefit of studying abroad is cultural exposure.”

12. disadvantages → drawbacks

Drawback sounds more natural and academic in formal writing, but they are interchangeable.

• ✅ “One disadvantage of remote work is isolation.”
• ✅ “One drawback of remote work is isolation.”

13. In my opinion → I would argue

I would argue sounds stronger and more formal. Use once or twice per essay — no more.

• 🔺 “In my opinion, governments should invest more in public transport.”
• ✅ “I would argue that governments should invest more in public transport.”

14. stop → prevent

Prevent is more precise — it implies stopping something before it becomes a bigger problem. Very common in academic English.

• 🔺 “The government should stop crime.”
• ✅ “The government should prevent crime.”
• ✅ “Governments should introduce stricter laws to prevent environmental damage.”

15. help → contribute to

Contribute to is more formal and analytical. Ideal for discussing causes, effects, and social issues.

• 🔺 “Regular exercise helps people stay healthy.”
• ✅ “Regular exercise contributes to better physical health.”
• ✅ “Social media use can contribute to anxiety among teenagers.”

16. because → due to

⚠️ Important grammar difference: because is followed by a full clause; due to is followed by a noun phrase.

• 🔺 “Many people suffer from stress because they work long hours.”
• ✅ “Many people suffer from stress due to long working hours.”

17. big / large → significant

Significant is extremely common in academic English for describing changes, trends, or effects — not physical size.

• 🔺 “There was a big increase in housing prices.”
• ✅ “There was a significant increase in housing prices.”

18. small → marginal

Marginal describes something very slight or limited. Use for small changes, effects, or differences — not physical size.

• 🔺 “There was a small improvement in public health.”
• ✅ “There was a marginal improvement in public health.”

19. money → funds

Funds is more formal and academic. A key collocation: allocate funds (not ‘spend money’).

• 🔺 “The government should spend more money on education.”
• ✅ “The government should allocate more funds to education.”

20. skills → practical / soft / hard skills

Use more specific skill types for precision. 
Practical = everyday abilities (cooking, finance). 
Soft = personal/social (communication, teamwork). 
Hard = technical (coding, engineering).

• 🔺 “Schools should teach more skills.”
• ✅ “Schools should teach more practical skills such as financial management.”
• ✅ “Employers increasingly value soft skills such as communication and teamwork.”