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most significant

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

carrying a lot of weight heavy material weighty

Antonyms

STRONGEST

dull inconsequential insignificant little minor ordinary small trivial unimportant unnoticeable

WEAK

meaningless

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.

Perhaps the most significant finding was that some age-related mitochondrial changes appeared reversible.

From Science Daily • Jun. 11, 2026

And so as in 2024, all eyes are on the SpaceX launch pad for the most significant share sale in stock market history.

From BBC • Jun. 8, 2026

Rush may be onto one of its most significant chapters, the one that extends beyond them, in which their music will bond generations and even transcend death.

From Los Angeles Times • Jun. 8, 2026

It may be the most significant day in American sports history.

From The Wall Street Journal • Jun. 7, 2026

I was feeling very good about the progress we were making when I got a call that would become the most significant break in the case.

From "Just Mercy" by Bryan Stevenson