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 That followed a momentous deal between Marvel and Sony to share the film rights for the character and fold him into the MCU. — Brianna Zigler, Entertainment Weekly, 3 July 2026 Hall, a Republican from Weatherford, said the momentous achievement wouldn’t have been possible had the Lord not paved the way. — Rachel Royster july 2, Fort Worth Star-Telegram, 2 July 2026 But before either the dialogue with Jeffrey Goldberg or the book discussion, some opening thoughts on this memorable and momentous anniversary. — David Frum, The Atlantic, 1 July 2026 Dying was such a momentous thing to do, and while Matthew, their dear friend, their cousin-brother, had been off doing it, the women had occupied themselves with such frivolities as cleaning and heat. — Danielle Parker, CBS News, 30 June 2026 See All Example Sentences for momentous

Recent Examples of Synonyms for momentous

Adjective

June and July are typically the quietest months of the season, but this shear has been a major roadblock and could have implications for the peak months, too.

— Mary Gilbert, CNN Money, 18 July 2026
While the Midland proposal ultimately failed, another major point of contention — Sunday voting — was also resolved through compromise.

— Nora O'Neill, Charlotte Observer, 18 July 2026

Definition of major

Adjective

Burnham’s faith is significant given the centuries of legislation and convention that effectively prevented Catholics from becoming prime minister.

— Hanna Ziady, CNN Money, 20 July 2026
While Kyiv has made significant progress since 2022 in defending itself against Russian missile and drone attacks, the country remains extremely vulnerable to ballistic missile strikes.

— Ihor N. Stelmach, Hartford Courant, 19 July 2026

Definition of significant

Adjective

The storm system that caused historic flooding in West Virginia Tuesday into Wednesday and wreaked havoc from the Ohio Valley to the East Coast will linger across Virginia and the Southeast through the end of the week.

— Briana Waxman, CNN Money, 23 July 2026
For many, its mix of Victorian-era architecture and historic landmarks is worth the trip alone.

— Condé Nast, Condé Nast Traveler, 23 July 2026

Definition of historic

Adjective

In addition to its ongoing pursuit of LeBron James, the Heat also would like to add another veteran shooter and another veteran big man but might begin the season with only 14 under contract.

— Barry Jackson, Miami Herald, 18 July 2026
Flair then turned her attention to Cargill and hit a big boot, forcing the disqualification.

— Alfred Konuwa, Forbes.com, 18 July 2026