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
When a person turns 70, the milestone calls for a momentous birthday bash.
—
Kate Bradshaw, Mercury News, 19 Sep. 2025
The end of the Vietnam War in 1975 brought another momentous change to Orange County.
—Ron Hasse, Oc Register, 19 Sep. 2025
It’s been a momentous year for Augustinus Bader.
—Adam Hurly, Robb Report, 18 Sep. 2025
Default windows open at a size of 120 columns and 30 rows, up from the previous 80 columns and 24 rows (those numbers were derived from the display resolutions of 1970s-era computer terminals, so the change is quietly momentous).
—ArsTechnica, 15 Sep. 2025
See All Example Sentences for momentous
Kate Bradshaw, Mercury News, 19 Sep. 2025
The end of the Vietnam War in 1975 brought another momentous change to Orange County.
—Ron Hasse, Oc Register, 19 Sep. 2025
It’s been a momentous year for Augustinus Bader.
—Adam Hurly, Robb Report, 18 Sep. 2025
Default windows open at a size of 120 columns and 30 rows, up from the previous 80 columns and 24 rows (those numbers were derived from the display resolutions of 1970s-era computer terminals, so the change is quietly momentous).
—ArsTechnica, 15 Sep. 2025
See All Example Sentences for momentous
Recent Examples of Synonyms for momentous
Adjective
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Some researchers also point to major gaps in accountability.—
Preston Fore,
Fortune,
28 Sep. 2025
-
And here, roundabouts make a major difference because drivers don’t turn left in front of oncoming traffic.—
Eric D. Lawrence,
USA Today,
28 Sep. 2025
Adjective
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Of those who responded to our informal survey, 53% said love is more important.—
Rachel Barber,
USA Today,
28 Sep. 2025
-
Tire tread depth - Checking your tire tread before hitting the road is important, as low or no tread can lead to sliding.—
CA Weather Bot,
Sacbee.com,
27 Sep. 2025
Adjective
-
Tribal nations report no immediate significant effects on services like healthcare and education.—
Frank Vaisvilas,
jsonline.com,
3 Oct. 2025
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So then the woman tried calling out to other significant names in her life.—
Maggie Menderski,
Louisville Courier Journal,
3 Oct. 2025
Adjective
-
The Walker-Stone House is a historic structure downtown that houses the Folk School of Fayetteville.—
Arkansas Online,
Arkansas Online,
30 Sep. 2025
-
Precise numbers of staffing cuts are hard to pin down, but their historic scale in the first eight months of this administration is unmistakable.—
Chris Sellers,
The Conversation,
29 Sep. 2025
Adjective
-
Sign up to receive our biggest stories as soon as they’re published.—
T. Christian Miller,
ProPublica,
30 Sep. 2025
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Shares in China’s Zijin Gold International surged more than 60% on its debut in Hong Kong on Tuesday after raising more than $3 billion in one of the world’s biggest initial public offerings this year.—
Jason Ma,
Fortune,
30 Sep. 2025
Cite this Entry
“Momentous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/momentous. Accessed 5 Oct. 2025.
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