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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

With a goal by Haitian-born Joe Gaetjens—who would later disappear in Port-au-Prince under the regime of François Duvalier—the U.S. secured one of the most significant victories in its soccer history.

From The Wall Street Journal • Jun. 11, 2026

As electronic devices continue to become smaller and more powerful, removing excess heat has become one of the most significant engineering challenges.

From Science Daily • Jun. 8, 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

Although we don’t take much time in our busy day to think about it, one of the most significant uses for music is to create an aesthetic experience.

From "Music and the Child" by Natalie Sarrazin