English Reference

Word

significantly

Phoneticssig·nif·i·cant·ly, stress on the second syllable

US/sɪɡˈnɪfɪkəntɫi/

UK/sɪɡnˈɪfɪkəntli/

Adverb of degree

Definition

adv. in a way that is large or important enough to be noticed. You use this to show that a change or difference is meaningful.

adv. to a sufficiently great or important degree as to be worthy of attention. Often used to indicate statistical importance or a substantial shift in quantity or quality.

Examples

“The price of gas has risen significantly this month.”

“The new software update significantly improved the battery life of the older laptop models.”

“While the initial results were promising, the researchers noted that the experimental group did not perform significantly better than the control group under standardized conditions.”

Examples

simple

“The price of gas has risen significantly this month.”

contextual

“The new software update significantly improved the battery life of the older laptop models.”

complex

“While the initial results were promising, the researchers noted that the experimental group did not perform significantly better than the control group under standardized conditions.”

Collocations

Common phrases and expressions where native English speakers use the word “significantly” in context.

Verb

01. significantly affect

“The new tax laws will significantly affect small business owners across the country.”

adv + verb

02. significantly alter

“The discovery of these documents could significantly alter our understanding of the war.”

adv + verb

03. significantly associate

“High stress levels are significantly associated with an increased risk of heart disease.”

adv + verb

04. significantly change

“The landscape has significantly changed since the new dam was constructed.”

adv + verb

05. significantly higher

06. significantly less

07. significantly fewer

08. significantly in an ongoing

09. significantly since

10. significantly smaller

11. assign significantly

12. rejection significantly

Usage

Typically modifies verbs, adjectives, or other adverbs; in academic contexts, it specifically implies that a result is unlikely to have occurred by chance.

Pitfall

The results are significant different.

The results are significantly different.

Learners often use the adjective 'significant' to modify another adjective, but an adverb is required.

Real-World Examples

“However, the vibrations then increased significantly and the crew heard a loud bang.”
The Guardian 14 Aug 2026
“Zookeepers at Twycross Zoo warn that Brexit significantly affected their ability to move animals between Europe and the UK.”
BBC News 13 Aug 2026
“In a small four-week trial, participants who added one to a healthier diet showed significantly lower depression scores, hinting that a simple dietary change could also support mental well-being.”
ScienceDaily 10 Aug 2026
“Researchers were even able to recreate this effect in resistant tumors, significantly improving survival in mice.”
ScienceDaily 8 Aug 2026

Etymology

From significant + -ly.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ADVERB

significantly(B2)

Grammar

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Common
Level
B2 · Upper IntermediateOxford
Updated

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English Reference