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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.

What’s the most significant thing that happened to Donald Trump in 1977?

From Slate • Jun. 11, 2026

The club's next two most significant shareholders are Czech businessman Daniel Kretinsky and Vanessa Gold - the daughter of David who died in January 2023 - who own 27% and 25.1% respectively.

From BBC • Jun. 9, 2026

Investors may have dodged the most significant bullet on June 5, when Standard & Poor’s opted not to change its index-listing rules for any of its market indices.

From Los Angeles Times • Jun. 9, 2026

One of the most significant aspects of the newly discovered nodal lines is that they are inherently spin-polarized.

From Science Daily • Jun. 5, 2026

Three days prior to the most significant date of his life, Glenn went through a final simulation, carrying out a full checkout of his flight plan.

From "Hidden Figures" by Margot Lee Shetterly