10 Advanced Vocabulary Words to Boost Your IELTS Lexical Resource Score
Lexical Resource is a quarter of your IELTS Writing score, and it rewards precision, not long words. Here are 10 advanced words with their meanings, natural collocations, and a Band 8+ example for each.
When you are aiming for Band 7, 8 or 9, Lexical Resource is one of the criteria that decides how far you get. It is a quarter of your Writing and Speaking score, and it measures how flexibly and precisely you use vocabulary - not how many long words you can recall.
The common trap is memorizing impressive-sounding words and forcing them into sentences where they do not belong. Examiners are not counting big words; they are checking collocation - whether the words you pick naturally go together - and whether each one actually fits its context.
Below are ten advanced words that genuinely lift a response. For each you get its meaning, the basic phrase it replaces, and a Band 8+ example in context. Use them where they fit, not everywhere they could go.
1. Ubiquitous
Lexical ResourceMeaning: present, appearing or found everywhere.
Use it in place of everywhere or very common when something is genuinely all around us.
Smartphones are very common in modern society.
Smartphones have become ubiquitous in modern society, fundamentally changing how we communicate.
The fix: Collocations: become ubiquitous, increasingly ubiquitous. Reserve it for things that are truly everywhere, not merely frequent.
2. Mitigate
Lexical ResourceMeaning: to make something less severe, harmful or painful.
Use it in place of reduce or make less, especially with problems and risks.
Governments must bring in stricter environmental rules to reduce the effects of climate change.
Governments must implement stricter environmental regulations to mitigate the effects of climate change.
The fix: You mitigate a problem, risk or impact - never a benefit. Common pairing: mitigate the effects / impact / risk of something.
3. Proponent
Lexical ResourceMeaning: a person who advocates for a theory, proposal or policy.
Use it in place of supporter or people who agree - it is far more precise in a discussion essay.
People who support remote work argue that it improves well-being.
Proponents of remote work argue that it significantly improves employee well-being and productivity.
The fix: Pattern: a proponent of [something]. Its opposite, opponent, is just as useful when you present the other side.
4. Detrimental
Lexical ResourceMeaning: tending to cause harm or damage.
Use it in place of bad, harmful or negative in formal writing.
Too much screen time can be bad for a child’s development.
Excessive screen time can have a detrimental impact on a child’s cognitive development.
The fix: Patterns: detrimental to [something], or a detrimental effect / impact on [something].
5. Paramount
Lexical ResourceMeaning: more important than anything else; supreme.
Use it in place of very important or main when one thing clearly outranks the rest.
When planning cities, public safety is very important.
When planning urban infrastructure, public safety must be of paramount importance.
The fix: Common form: of paramount importance. Do not weaken it with very - paramount already means the highest.
6. Elicit
Lexical ResourceMeaning: to draw out a response, reaction or fact from someone.
Use it in place of get, bring out or cause when talking about reactions and answers.
The new policy will probably cause a strong reaction from local businesses.
The new government policy is likely to elicit a strong reaction from local businesses.
The fix: Collocations: elicit a response / reaction / answer. Do not confuse it with illicit, which means illegal.
7. Alleviate
Lexical ResourceMeaning: to make a problem or suffering less severe.
Use it in place of ease or relieve, especially with hardship and pressure.
More public transport can help ease traffic in big cities.
Building more public transportation networks can help alleviate traffic congestion in major cities.
The fix: Collocations: alleviate congestion / poverty / pressure. Close to mitigate, but it leans towards easing hardship.
8. Exacerbate
Lexical ResourceMeaning: to make a bad situation or negative feeling worse.
Use it in place of make worse - it is the natural opposite of alleviate and mitigate.
Not fixing the housing shortage will only make the economic crisis worse.
Failing to address the housing shortage will only exacerbate the current economic crisis.
The fix: Only use it with something already negative: exacerbate a problem / crisis / tension.
9. Pragmatic
Lexical ResourceMeaning: dealing with problems sensibly and realistically rather than idealistically.
Use it in place of practical or sensible, particularly when contrasting realism with idealism.
To reduce food waste, society needs a practical approach rather than ideal expectations.
To solve the issue of global food waste, society needs a pragmatic approach rather than idealistic expectations.
The fix: Collocations: a pragmatic approach / solution. It pairs well as a contrast with idealistic in opinion essays.
10. Lucrative
Lexical ResourceMeaning: producing a great deal of profit.
Use it in place of profitable or makes a lot of money.
The technology sector is still one of the most profitable industries for graduates.
The technology sector remains one of the most lucrative industries for young graduates.
The fix: Collocations: a lucrative career / industry / market / deal. Keep it for money-making activities, not general success.
How Cuepen helps you use these words correctly
Memorizing advanced vocabulary is the easy part. The real test is deploying each word with the right grammar, tone and collocation under exam conditions - and misusing a word like exacerbate or paramount costs you more than never using it at all.
When you practice an essay in Cuepen, the AI examiner reads it line by line, flags unnatural phrasing and wrong collocations, and shows you the natural alternative - so you find out a word does not fit before an examiner does. It also scores every response across all four criteria, so you can see whether your vocabulary is actually reaching the Band 7, 8 or 9 threshold.
The rule for Lexical Resource is quality over quantity: choose a few words you fully control, learn their collocations, and practice them in context until they are automatic.
Frequently asked questions
How can I improve my IELTS Lexical Resource score?+
Learn words in context with their natural collocations rather than memorizing long lists. Lexical Resource rewards flexible, precise use of vocabulary, so a few words you fully control are worth more than many you use approximately.
What is Lexical Resource in IELTS?+
Lexical Resource is one of the four marking criteria in IELTS Writing and Speaking, worth 25% of the score. It assesses the range and precision of your vocabulary, including collocation, word choice and the ability to paraphrase.
Does using difficult vocabulary guarantee a higher IELTS band?+
No. Examiners reward words used accurately and naturally, not words that are simply long. A high-level word placed in the wrong collocation is more visible than plain, correct language and can lower your Lexical Resource score.
What is collocation in IELTS Writing?+
Collocation is the way certain words naturally combine - for example you mitigate a risk and alleviate congestion, but not the reverse. Using the expected collocation is one of the clearest signals of genuine vocabulary control.
How many advanced words should I use in an IELTS essay?+
There is no target number. Aim to use a handful of precise, well-chosen words correctly across the essay rather than forcing an advanced word into every sentence, which usually produces errors that cost more than they gain.
Get your essay graded like this
Cuepen scores your IELTS Writing against all four criteria and shows the exact fixes, line by line — in seconds.
Try Cuepen free