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
Bertha takes a risk, as she is known to do, by welcoming divorced women, and the momentous occasion becomes even grander when Mrs. Astor arrives, signaling that even the power players of old-money New York are willing to follow her as society moves forward.
—
Zoe Papelis, Vulture, 10 Aug. 2025
As the Chiefs entered last season on a quest to become the first team to win three straight Super Bowls, the organization seeking to be known as the World’s Team was acutely conscious of both the momentous opportunity and its precariousness.
—Kansas City Star, 8 Aug. 2025
North Dakota’s oil and gas industry was on the verge of momentous change.
—Jacob Orledge, ProPublica, 4 Aug. 2025
Although many British musicians and artists have died in recent years, some fans could only point to the death of Queen Elizabeth II in 2022 as being as momentous in U.K. culture.
—Emily Zemler, Rolling Stone, 30 July 2025
See All Example Sentences for momentous
Zoe Papelis, Vulture, 10 Aug. 2025
As the Chiefs entered last season on a quest to become the first team to win three straight Super Bowls, the organization seeking to be known as the World’s Team was acutely conscious of both the momentous opportunity and its precariousness.
—Kansas City Star, 8 Aug. 2025
North Dakota’s oil and gas industry was on the verge of momentous change.
—Jacob Orledge, ProPublica, 4 Aug. 2025
Although many British musicians and artists have died in recent years, some fans could only point to the death of Queen Elizabeth II in 2022 as being as momentous in U.K. culture.
—Emily Zemler, Rolling Stone, 30 July 2025
See All Example Sentences for momentous
Recent Examples of Synonyms for momentous
Adjective
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Among the new customers were more than 50 Global 2000 companies, representing major enterprises willing to undertake complex, multi-year infrastructure overhauls.—
Steve McDowell,
Forbes.com,
1 Sep. 2025
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Here's your daily look at traffic on major highways in the Kansas City area.—
Kansas City Star,
Kansas City Star,
31 Aug. 2025
Adjective
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Tire tread depth - Checking your tire tread before hitting the road is important, as low or no tread can lead to sliding.—
NC Weather Bot,
Charlotte Observer,
24 Aug. 2025
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What’s important to note here is that these steps are not always explicit or dramatic.—
Mark Travers,
Forbes.com,
23 Aug. 2025
Adjective
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Many of them even took him on in races from the blocks, with Phelps often giving the Ravens players a significant head start before diving in.—
Sophie Kaufman,
Forbes.com,
15 Aug. 2025
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Harold Gonsalves and historically significant service members such as baseball great Jackie Robinson.—
Rob Picheta,
CNN Money,
14 Aug. 2025
Adjective
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Today in history Here are just some of the historic events on this date in the past.—
Lorenzino Estrada,
AZCentral.com,
29 Aug. 2025
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The Border War will be back in Columbia next week, the renewal of a historic rivalry that hasn’t been played in football since 2011.—
Maddie Hartley,
Kansas City Star,
29 Aug. 2025
Adjective
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Ahlquist’s project is the last big development to come to the area east and west of Ten Mile Road north of I-84 that is guided by the city’s Ten Mile Interchange Specific Area Plan adopted in 2007.—
Marcus Dorsey,
Idaho Statesman,
23 Aug. 2025
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Watch it here: Stream your favorite shows, the biggest blockbusters and more.—
Saleen Martin,
USA Today,
23 Aug. 2025
Cite this Entry
“Momentous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/momentous. Accessed 3 Sep. 2025.
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