How many words do I need for IELTS band 7?

There's no fixed number — a solid, accurately-used core plus strong collocations across common topics matters far more than a large but clumsily-used vocabulary.

Are word lists useless?

Not useless, but inefficient alone. Learn words as collocations and in topic groups, and practise using them — recognition without production won't lift your band.

What are collocations?

Natural word partnerships, like "make a decision" or "a sharp increase." Using them correctly is a major part of the Lexical Resource score.

How do I remember new vocabulary?

Use each item in your own sentence within a day, review with spaced repetition, and get feedback on whether you're using it correctly.

How to Build Vocabulary for IELTS & TOEFL (Beyond Memorising Word Lists)

Why word lists don't work

Knowing a word's definition isn't the same as deploying it correctly. The exam criteria reward natural collocation and precise use; a rare word in the wrong partnership ("do a mistake", "strong rain") actually lowers Lexical Resource. So the goal isn't more words — it's usable words you can produce under pressure, in the right combinations.

What to learn instead

Collocations (word partners). Learn "make a decision", "heavy rain", "a sharp increase" as units. Examiners reward natural pairings far more than obscure single words.
Topic groups. IELTS/TOEFL recycle themes (environment, education, technology, health). Build a small bank of accurate words and phrases per theme — that's what you'll actually need on test day.
Word families. One root, many forms: analyse / analysis / analytical. This powers paraphrasing and grammatical range at once.
Functional language. Phrases for comparing, giving opinions, hedging ("it could be argued that…", "to some extent") — high-value across every task.

How to make it stick (active recall)

Use it within 24 hours. Write a sentence or say it aloud — production locks it in far better than rereading.
Spaced repetition for the collocations/phrases you want active, not isolated words.
Keep a topic notebook — when you meet a useful phrase, file it under its theme with an example.
Get feedback on usage. The real test is whether a word lands correctly in your essay or answer — not whether you can recall its meaning.

A realistic target

For band 7+ you don't need thousands of advanced words — you need a solid, accurately-used core plus strong collocations across the common topics. Five well-chosen, correctly-used phrases beat fifty memorised words you deploy clumsily.

Common mistakes

Hoarding "impressive" words and forcing them in unnaturally.
Learning words in isolation instead of with their partners.
Passive review only — recognising a word ≠ being able to use it.
Ignoring everyday precision (the right common word) in favour of rare vocabulary.

Put it into practice

The proof is whether your new vocabulary lands correctly under exam conditions. Write timed responses and get feedback on Lexical Resource with IELTS writing correction or TOEFL writing feedback, and pair this with our paraphrasing guide to put the words to work.