IELTS Synonyms: 50 Overused Words With Band 7+ Upgrades (2026)

Examiners do not reward rare words. They reward precise words in natural combinations. The table below gives you 50 band 7+ upgrades — each with a collocation to copy and a misuse warning so you do not lose points showing off.

One rule before you start: never use an upgrade you have not practised in a full sentence. For essay structure to house this vocabulary, see Task 2 essay structure.

How to Use This Table

• Upgrade = the band 7+ replacement.
• Collocation = words that naturally go with it. Memorise the pair, not the word alone.
• Misuse warning = the mistake that drops your Lexical Resource score.

The 50-Word Upgrade Table

#	Overused	Upgrade	Collocation	Misuse warning
1	good	beneficial	beneficial effect on	Don't write "beneficial good" — pick one adjective.
2	bad	detrimental	detrimental to health	Formal; needs "to" + noun, never "detrimental for".
3	big	substantial	substantial increase in	Don't use for people ("substantial man" is wrong).
4	small	modest	modest improvement	Means small-but-positive; not for physical size of objects.
5	important	crucial	crucial role in	Stronger than important — save for thesis-level claims.
6	very important	paramount	paramount importance	Very formal; once per essay max.
7	get	obtain	obtain permission	Don't use in Speaking — sounds stiff; "get" is fine there.
8	give	provide	provide support for	"Provide to" is wrong; provide + noun, no preposition.
9	show	demonstrate	demonstrate a trend	Formal; in Speaking prefer "show".
10	say	argue	argue that the policy	Means "claim with reasons" — not for quoting speech.
11	think	contend	contend that growth	Formal; needs "that"-clause, never "contend about".
12	buy	purchase	purchase property	Formal/written; "buy" is natural in Speaking Part 1.
13	help	facilitate	facilitate access to	Means "make easier", not "do for someone" — no human object.
14	use	utilise	utilise resources	Often sounds forced; "use" is safer unless academic tone fits.
15	need	require	require investment	Formal; "need" is fine in Speaking.
16	want	seek	seek employment	Means "try to get"; don't use for food/drink.
17	like	favour	favour regulation	Formal; needs object — "favour of" alone is wrong.
18	rich	affluent	affluent neighbourhood	Describes areas/groups, not one casual person.
19	poor	impoverished	impoverished region	Strong; don't use for "poor result" (use "weak").
20	happy	content	content with life	Milder than happy — "content with", never "content of".
21	sad	distressing	distressing outcome	Adjective for situations, not "I am distressing".
22	many	numerous	numerous studies show	Formal/plural nouns only; don't write "numerous much".
23	a lot of	considerable	considerable attention	Uncountable or singular nouns; not "considerable people".
24	very	exceedingly	exceedingly rare	Extreme; once per essay or it looks memorised.
25	really	genuinely	genuinely concerned about	Don't stack: "really genuinely" is a band-killer.
26	so	consequently	consequently, unemployment	Sentence connector — needs comma, starts a result clause.
27	but	nevertheless	nevertheless, the benefits	Formal contrast; don't pair with "but" in same sentence.
28	and	moreover	moreover, education	Adds a stronger point — not for shopping lists.
29	because	owing to	owing to rising costs	Followed by noun phrase, never a full clause.
30	fast	rapid	rapid expansion of	Collocates with change/growth, not "rapid food".
31	slow	gradual	gradual decline in	For trends; don't use for people ("gradual man").
32	new	innovative	innovative approach to	Means creatively new — not for "new shirt".
33	old	outdated	outdated practice	Negative judgement; don't use for elderly people.
34	change	transform	transform the economy	Total change; too strong for small adjustments.
35	improve	enhance	enhance productivity	Needs an object — "enhance" alone is incomplete.
36	make better	ameliorate	ameliorate conditions	Very formal; "improve" is safer in most essays.
37	clean	hygienic	hygienic conditions	For environments/practices, not "hygienic idea".
38	dirty	unsanitary	unsanitary living conditions	Formal; "dirty" is natural in Speaking.
39	hard	arduous	arduous journey	Means tiring/long; not for "hard exam question" (use "challenging").
40	easy	straightforward	straightforward process	Means uncomplicated — not "effortless victory".
41	smart	astute	astute observation	For judgements/decisions, not IQ in general.
42	stupid	ill-conceived	ill-conceived policy	Attacks the idea, not the person — never write about people.
43	dangerous	hazardous	hazardous working conditions	Formal/technical; "dangerous" suits Speaking.
44	beautiful	picturesque	picturesque village	For places/views only — not people.
45	ugly	unsightly	unsightly development	For built environment; avoid for people entirely.
46	famous	renowned	renowned for cuisine	Needs "for" + noun; "renowned from" is wrong.
47	boring	monotonous	monotonous routine	For repetitive things; not "monotonous person".
48	interesting	compelling	compelling argument	For ideas/evidence, not hobbies ("compelling football" is odd).
49	problem	predicament	economic predicament	Means difficult situation with no easy fix — stronger than problem.
50	answer	resolve	resolve the dispute	"Resolve a problem" works; "resolve a question" does not — use "answer".
51	tired	exhausted	exhausted after shifts	For people, not systems ("exhausted battery" is wrong).
52	angry	indignant	indignant at corruption	Formal moral anger; too strong for everyday annoyance.
53	worry	apprehension	apprehension about automation	Noun; needs "about" + noun, not a that-clause.
54	keep	retain	retain skilled staff	Formal; "retain water" differs — stick to staff/talent/customers.
55	drop	plummet	plummet in sales	Sudden steep fall; too dramatic for small dips.
56	rise	soar	soar in demand	Sharp rise; don't use for slow trends (use "grow steadily").
57	cut	curtail	curtail spending on	Formal reduce; needs object — never "curtail down".
58	allow	permit	permit flexible hours	Formal; "permit to work" needs the infinitive marker.
59	stop	deter	deter reoffending	Means discourage, not physically halt — needs object + (from + noun) optional.
60	spread	disseminate	disseminate information	Formal/written; "spread news" is natural in Speaking.
61	different	disparate	disparate income levels	Means fundamentally different; too strong for mild variety.
62	clear	unequivocal	unequivocal evidence of	Very formal; once per essay — "clear" is safer twice.
63	unfair	inequitable	inequitable access to	Formal/policy register; needs "access to", not "for".
64	enough	sufficient	sufficient funding for	Formal; "sufficiently" is adverb — don't swap them.
65	always	invariably	invariably linked to	Means without exception — only for near-certain claims.

When NOT to Upgrade: Precision Beats Variety

Upgrading every word is how 6.5 essays are made. Do not upgrade when:

1. You lose precision. "Impoverished region" is not a synonym for "poor harvest" — it describes people/areas, not results. If the upgrade narrows or shifts meaning, keep the plain word.
2. The register clashes. "Utilise", "ameliorate", "disseminate" in Speaking Part 1 sound memorised and cost Fluency. Illustrative misfire (invented): "I utilise my bike to disseminate to college" — two upgrades, zero naturalness. Keep "use" and "go".
3. You break the collocation. "Considerable people", "substantial man", "compelling football" are all upgrade errors from this very table — the collocation column is the licence, not the upgrade column. No memorised pair, no upgrade.
4. One per sentence is enough. Two formal words in one clause ("curtail inequitable dissemination") signals memorisation. Spread 8–12 upgrades across Task 2 and leave simple connectors ("and", "but", "so") alone where they are clearest.

Rule of thumb: if reading the sentence aloud makes you pause, revert the upgrade. Examiners reward the accurate plain word over the approximate fancy one, every time.

3 Patterns Examiners Reward

1. Precision over rarity. "Detrimental to health" beats "deleterious" because the collocation is exact. Examiners penalise rare words in wrong pairs.

2. One upgrade per sentence. Two formal words in one clause ("utilise plethora") signals memorisation. Spread upgrades across the essay — aim for 8–12 total in Task 2.

3. Register matching. Writing Task 2 wants neutral-academic. Words like "purchase", "nevertheless", "consequently" fit essays; in Speaking they sound rehearsed. Build topic vocabulary alongside these — see the vocabulary guide.

Practice Drill (15 Minutes)

1. Take your last essay and highlight every "good, bad, big, important, very".
2. Replace 10 with upgrades from this table including the collocation.
3. Read each sentence aloud — if the upgrade sounds forced, revert it.
4. Re-submit for feedback: 6.5 to 7 improvement guide.

The Bottom Line

Learn 50 upgrades, but use 10 well. Accuracy + collocation is what moves Lexical Resource from 6 to 7 — not word rarity.