as in major
having great meaning or lasting effect
a momentous occasion that will go down in the history books
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Recent Examples of momentous
The 2026 AMAs were a momentous occasion for '90s and early-aughts enthusiasts, with performances from Hootie & the Blowfish (nearly 30 years since their last American Music Award), The Pussycat Dolls, Busta Rhymes and New Kids on the Block.
—
Brendan Le, PEOPLE, 26 May 2026
The criticism of this process is reminiscent of more momentous controversies in the traditional financial world, where small groups of traders had the power to swing much bigger markets.
—Bloomberg, Mercury News, 26 May 2026
However, the most momentous change was the introduction of the backpass rule, which would eventually revolutionize the game.
—Cesar R. Torres, The Conversation, 26 May 2026
Planting a flag in a new location is always a momentous moment for any brand—so when a house endeavors to reposition that pennant, suddenly things feel all the more significant.
—Ming Liu, Robb Report, 24 May 2026
See All Example Sentences for momentous
Brendan Le, PEOPLE, 26 May 2026
The criticism of this process is reminiscent of more momentous controversies in the traditional financial world, where small groups of traders had the power to swing much bigger markets.
—Bloomberg, Mercury News, 26 May 2026
However, the most momentous change was the introduction of the backpass rule, which would eventually revolutionize the game.
—Cesar R. Torres, The Conversation, 26 May 2026
Planting a flag in a new location is always a momentous moment for any brand—so when a house endeavors to reposition that pennant, suddenly things feel all the more significant.
—Ming Liu, Robb Report, 24 May 2026
See All Example Sentences for momentous
Recent Examples of Synonyms for momentous
Adjective
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Today’s roundup covers major local food news, a tightening governor’s race, and a homicide arrest in North Sacramento.—
Ruyuan Li. Story produced with AI assistance,
Sacbee.com,
5 June 2026
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One major contributor, the docuseries seems to argue, is the downfall of the prosecution at the hands of its own witnesses.—
Los Angeles Times,
Los Angeles Times,
5 June 2026
Adjective
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China is North Korea’s top economic lifeline, accounting for the vast majority of the country’s foreign trade, and has long ranked as Pyongyang’s most important diplomatic partner.—
Simone McCarthy,
CNN Money,
5 June 2026
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This year, owing to a mixup in the congressional budget, one of the government’s most important scholarships was left severely underfunded, depriving thousands of Peru’s neediest high-school graduates of the opportunity to continue their studies at local universities.—
Daniel Alarcón,
New Yorker,
4 June 2026
Adjective
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Officials described the discovery as a significant blow to criminal organizations that rely on underground smuggling routes to move narcotics and other contraband across the border.—
Greg Wehner,
FOXNews.com,
2 June 2026
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The concerns stem from baseball's history of labor disputes and the significant divide between the league and the MLB Players Association on several economic issues.—
Peter Chawaga,
Forbes.com,
1 June 2026
Adjective
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Among the most renowned establishments is Salon Corona, a restaurant and brewery in Mexico City’s historic center.—
Michael Rios,
CNN Money,
7 June 2026
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During Black History Month (February) and Women’s History Month (March), the foundation also leads specific tours with a narrow focus on the historic contributions of each group.—
Condé Nast,
Condé Nast Traveler,
7 June 2026
Adjective
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Most travelers surveyed said their biggest regrets occurred as young adults.—
Kathleen Wong,
USA Today,
3 June 2026
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Among the big three of the Beats, Ginsberg remains the most enduring.—
Literary Hub,
Literary Hub,
3 June 2026
Cite this Entry
“Momentous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/momentous. Accessed 7 Jun. 2026.
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