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Definitions

significant

[sig-nif-i-kuhnt] / sɪgˈnɪf ɪ kənt /
ADJECTIVE
telling, meaningful
Synonyms
STRONGEST
compelling important momentous powerful serious symbolic
WEAK
cogent convincing denoting eloquent expressing expressive facund forceful heavy indicative knowing meaning pregnant representative rich sententious sound suggestive valid weighty
Antonyms
STRONGEST
insignificant trivial unimportant
WEAK
meaningless minor
ADJECTIVE
important, critical
Synonyms
STRONGEST
big consequential considerable meaningful momentous notable noteworthy serious substantial vital
WEAK
big-deal big-wheel carrying a lot of weight heavy material weighty
Antonyms
STRONGEST
dull inconsequential insignificant little minor ordinary small trivial unimportant unnoticeable
WEAK
meaningless

Usage

What are other ways to say significant? The adjectives significant and meaningful, when describing forms of expression, imply an underlying and unexpressed thought whose existence is plainly shown although its precise nature is left to conjecture. Significant suggests conveying important or hidden meaning: On hearing this statement, he gave the officers a significant glance. Meaningful implies a secret and intimate understanding between the persons involved: Meaningful looks passed between them. Expressive suggests conveying, or being capable of conveying, a thought, intention, emotion, etc., in an effective or vivid manner: an expressive gesture. Suggestive implies an indirect or covert conveying of a meaning, sometimes mentally stimulating, sometimes verging on impropriety or indecency: a suggestive story or remark.

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Pakistan shares a 900-km border with Iran, with whom it has maintained warm -- if sometimes testy -- relations, with the countries sharing significant cultural and trade ties.

From Barron's • Apr. 14, 2026

In a statement, Space Capital described orbital data centers becoming viewed as a credible idea the “most significant structural shift of the quarter.”

From MarketWatch • Apr. 14, 2026

Bond supply will be significant in the eurozone on Tuesday.

From The Wall Street Journal • Apr. 14, 2026

President Aoun, hoping to stop the bloodshed, proposed to negotiate directly with Israel, a significant step for two countries that do not even recognise each other.

From BBC • Apr. 13, 2026

Virchow made significant discoveries in oncology—the treatment of tumors—and parasitology, the scientific study of parasites.

From "Mountains Beyond Mountains" by Tracy Kidder and Michael French

Vocabulary lists containing significant

Academic Vocabulary: Core Tier 2 Words, List 1

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The SAT: Language of the Test, List 6

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The Language of Standardized Tests, List 4

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