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
Turns out, there was another momentous development in college football that occurred 32 days earlier, although almost no one at the time took note of it.
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Bruce Feldman, New York Times, 2 Jan. 2026
Ultimate Collector's Series sets 2025 has been a momentous year for UCS sets, for more than one reason.
—Kim Snaith, Space.com, 31 Dec. 2025
Read on for their reflections on a challenging yet momentous year and their hopes and outlook for 2026.
—Carved, Sourcing Journal, 31 Dec. 2025
In addition to the Jubilee, 2025 was momentous because of the papal transition after Francis died in April and cardinals elected history’s first pope from the United States.
—Los Angeles Times, 31 Dec. 2025
See All Example Sentences for momentous
Recent Examples of Synonyms for momentous
Adjective
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Recently, researchers have made a major leap forward by engineering a novel cathode material that dramatically elevates performance, bringing us closer to practical, high-efficiency thermal energy systems.—
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The potential for a major nurses strike in New York City is growing by the minute, after major hospitals and the New York State Nurses Association failed to negotiate a deal before Sunday's midnight deadline.—
Adjective
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The new California law or Assembly Bill 1830 requires most tortillas and corn masa products sold to contain folic acid, a vitamin important to infant health, according to CalMatters.—
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Not only is the actual lighting itself important for completing tasks and creating ambiance, but the fixtures also double as decor.—
Adjective
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Credit card interest rates represent a significant portion of financial institutions’ revenue.—
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That figure marks a significant drop from a recent peak attained in 2023, but borrowing costs remain well above a 0% rate established at the outset of the COVID-19 pandemic.—
Adjective
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Some nearby residents, including Sue Weston — the owner of Weston Gardens in Bloom, a historic garden located on Anglin Drive — have expressed fierce opposition to the data center.—
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The 111 line-of-duty deaths in 2025 represent a near-historic low.—
Adjective
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Lenovo came out all guns blazing at CES 2026, using its biggest global stage yet to signal major leaps across devices, AI, and partnerships.—
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And, in the aftermath, these were Chiefs coaches’ biggest regrets following a season gone awry.—
Cite this Entry
“Momentous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/momentous. Accessed 13 Jan. 2026.
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