The meaning of SIGNIFICANT is having meaning; especially : full of import : suggestive. How to use significant in a sentence.

She looked at him across the table and gave him a significant smile. Do you think it's significant that he hasn't replied to my letter yet?

Discover everything about the word "SIGNIFICANT" in English: meanings, translations, synonyms, pronunciations, examples, and grammar insights - all in one comprehensive guide.

WordReference Random House Learner's Dictionary of American English © 2025 sig•nif•i•cant /sɪgˈnɪfɪkənt/ adj. important; of consequence: a significant event in world history. having a special, …

Synonyms for SIGNIFICANT: major, important, historic, big, substantial, much, meaningful, monumental; Antonyms of SIGNIFICANT: small, minor, little, insignificant, slight, negligible, trivial, unimportant

Significant figures, also referred to as significant digits, are specific digits within a number that is written in positional notation that carry both reliability and necessity in conveying a particular quantity. When …

SIGNIFICANT definition: important and deserving of attention; of consequence. See examples of significant used in a sentence.

significant, adj., adv., & n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

Holding considerable importance, relevance, or influence. See example sentences, synonyms, and etymology for the adjective significant.

significant definition: having considerable importance or effect. Check meanings, examples, usage tips, pronunciation, domains, and related words. Discover expressions like "significant difference", …