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.

See Examples For:

most significant

One of park officials’ most significant management challenges started when tourists began entering Yosemite by automobile.

From Los Angeles Times ● Jul. 21, 2026

None of these measures would address the two most significant causes of the Chinese slump.

From The Wall Street Journal ● Jul. 16, 2026

"This could become the most significant smoke event in New York City since 2023, and conditions will be closely monitored for any deterioration," the city's Department of Emergency Management said.

From Barron's ● Jul. 16, 2026

Described by Trade Secretary Peter Kyle as "the most significant services trade deal the UK has ever negotiated", the agreement will also scrap mobile roaming charges for tourists and professionals visiting both countries.

From BBC ● Jul. 13, 2026

Arguably the most significant reform is the creation of an “innocent owner” defense.

From "The New Jim Crow" by Michelle Alexander