MOMENTOUS Synonyms: 74 Similar and Opposite Words

momentous

adjective

mō-ˈmen-təs

Definition of momentous

as in major

having great meaning or lasting effect a momentous occasion that will go down in the history books

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Example Sentences

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Recent Examples of momentous Jillian joined Patrick for the momentous night, and the two posed for photos in matching black outfits. — Caroline Blair, PEOPLE, 31 July 2026 The sleepy new Strokes album Reality Awaits landed Friday, less than a week before the 25th anniversary of the band’s momentous 2001 debut, Is This It. — Craig Jenkins, Vulture, 28 July 2026 The Slovenian began arguably cycling’s most famous climb more than three minutes down on remnants of the breakaway but ascended it in a time of 35 minutes and 27 seconds — one of the most momentous performances the sport has witnessed. — Jacob Whitehead, New York Times, 24 July 2026 Ronstadt’s career, too, was set to take more momentous turns. — Rance Collins, Entertainment Weekly, 15 July 2026 See All Example Sentences for momentous

Recent Examples of Synonyms for momentous

Adjective

The cushion cut cocktail rings give major Taylor energy, which is why they're beloved by Swifties and beyond.

— ABC News, ABC News, 8 Aug. 2026
Speraw highlights women's volleyball as America's largest girls' team sport, yet commercially underdeveloped, presenting a huge opportunity for growth and major sponsorship.

— Tim Genske, Forbes.com, 8 Aug. 2026

Definition of major

Adjective

That’s important for Cyprus because under an existing agreement, Cypriot energy consumers would have to put up as much as 63% of the cable’s construction cost, meaning a significant jump in electricity prices.

— ABC News, ABC News, 9 Aug. 2026
As artificial intelligence revolutionizes how tasks are completed, many people are pleading their cases for why their jobs are important.

— Doug Turnbull, AJC.com, 9 Aug. 2026

Definition of important

Adjective

Low-income Americans who can’t afford to buy into the housing market and who lack a significant presence in the stock market are starting on their back foot.

— David Goldman, CNN Money, 10 Aug. 2026
Apple needs significant upload capacty include the volume of shipping required to bring the iPhones to market.

— Ewan Spence, Forbes.com, 10 Aug. 2026

Definition of significant

Adjective

The comments by Akishino, the next in line for the throne, come just weeks after a historic revision to the Imperial House Law by the conservative government of Prime Minister Sanae Takaichi that insists only paternal-lineage men can become emperor.

— ABC News, ABC News, 13 Aug. 2026
The mayor said people visiting historic Bushnell Park don’t want to look down and see a message about slip and falls.

— Pamela McLoughlin, Hartford Courant, 13 Aug. 2026