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.

"It has become increasingly apparent that the online environment and social media platforms in particular are perhaps the most significant factor for the spread of antisemitism," said assisting counsel Richard Lancaster.

From Barron's • Jun. 29, 2026

One of the study's most significant findings came from animal experiments.

From Science Daily • Jun. 27, 2026

It is the most significant legislation Congress has passed on housing in more than 30 years, and it contains a host of provisions aimed at removing regulatory barriers, improving federal programs and incentivizing new building.

From Los Angeles Times • Jun. 24, 2026

Finance Minister John O'Dowd said making the certificates available for parents had been "one of the most significant and impactful achievements of this mandate".

From BBC • Jun. 23, 2026

“Visual strategies are most significant to students whose hearing is compromised. It’s their primary means for receiving information.”

From "Music and the Child" by Natalie Sarrazin