IELTS Vocabulary: 100+ Words for Band 9 Writing

Lexical Resource accounts for 25% of your IELTS Writing and Speaking score. To hit Band 9, you don't just need "big words"—you need precise, natural collocations and topic-specific vocabulary. This guide provides essential Band 7-9 vocabulary organized by function and topic.

What is "Band 9 Vocabulary"?

Examiners aren't looking for a walking thesaurus. They are assessing:

Range: Do you use a variety of words, or repeat the same ones?
Accuracy: Are the words used correctly in context?
Collocation: Do words naturally go together? (e.g., "make a decision" not "do a decision")
Topic-Specific Vocabulary: Words relevant to the subject (Environment, Education, Technology)
Style: Formal for Writing, slightly more idiomatic for Speaking

Power Verbs for Academic Writing

Replace simple verbs with these precise alternatives:

Basic Verb	Band 7-9 Alternative	Example Sentence
Change	Alter / Transform / Modify	Technology has transformed the way we communicate.
Remove	Eliminate / Eradicate / Abolish	The government aims to eradicate poverty by 2030.
Keep	Retain / Preserve / Maintain	It is vital to preserve our cultural heritage.
Happen	Occur / Arise / Emerge	Problems often arise when communication fails.
Show	Demonstrate / Illustrate / Reveal	The data demonstrates a clear upward trend.

Impact Adjectives

Instead of "Bad" or "Harmful"

Detrimental: "Smoking has a detrimental effect on health."
Adverse: "The adverse weather conditions delayed the flight."
Catastrophic: "A catastrophic failure of the system."
Devastating: "The hurricane had devastating consequences."

Instead of "Important"

Imperative: "It is imperative that we act now."
Pivotal: "Education plays a pivotal role in success."
Indispensable: "Mobile phones have become indispensable."
Paramount: "Safety is of paramount importance."

Topic-Specific Collocations

Environment & Climate

Deplete natural resources, ecological footprint, sustainable development, irreversible damage, renewable energy, carbon emissions, biodiversity loss, environmental degradation

Education

Rote learning, extracurricular activities, tertiary education, holistic development, academic performance, critical thinking skills, lifelong learning, educational attainment

Technology

Technological breakthrough, digital literacy, artificial intelligence, cutting-edge, obsolete, disruptive innovation, cyber security, technological advancement

Health & Society

Public health crisis, sedentary lifestyle, preventive measures, healthcare system, chronic diseases, mental wellbeing, social cohesion, aging population

Common Collocations (Word Partnerships)

These word pairs naturally go together. Using them shows sophistication:

Make a decision / progress / an effort / a mistake
Do research / homework / damage / harm
Take measures / action / responsibility / advantage
Raise awareness / concerns / questions / standards
Pose a threat / a challenge / a risk / a question
Address the issue / the problem / concerns

Don't Force It

Using a "big word" incorrectly is worse than using a simple word correctly. If you're not 100% sure, stick with what you know. Examiners can tell when vocabulary is forced or memorized.

Frequently Asked Questions

No. Using a word incorrectly is worse than using a simple word correctly. Only use advanced vocabulary when you're confident about its meaning and context.

Test Your Vocabulary Range

Write an essay using 5+ of these words and see if our AI detects them. Get instant feedback on your Lexical Resource score.