momentous

[moh-men-tuhs] / moʊˈmɛn təs /

ADJECTIVE

important; serious

Synonyms

STRONGEST

consequential crucial decisive eventful far-reaching fateful historic meaningful memorable notable pivotal significant weighty

WEAK

big chips are down considerable critical earth-shaking earth-shattering epochal grave heavy heavy number material of moment outstanding substantial vital

Antonyms

STRONGEST

inconsequential insignificant meaningless ordinary trivial uneventful unimportant unnoteworthy unremarkable unsubstantial

WEAK

immaterial trifling

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Closing off a momentous week for both companies, CoreWeave and Anthropic announced a multi-year compute agreement on Friday that’s scheduled to go online later this year.

From MarketWatch • Apr. 10, 2026

With a tour looming in the summer and a first-time Coachella slot coming next month, Slayyyter is winding up for a momentous year.

From Los Angeles Times • Mar. 25, 2026

These momentous gains contributed to an increase in market value that helped them secure their spots in the S&P 500.

From Barron's • Mar. 24, 2026

Mr. Scott charts a course through these momentous events with great skill, producing a book that is readable and accessible but bedded in authoritative scholarship.

From The Wall Street Journal • Mar. 8, 2026

We looked at each other in disbelief and glanced over at the warders, who seemed unaware that anything momentous had occurred.

From "Long Walk to Freedom" by Nelson Mandela

Vocabulary lists containing momentous

The SAT: Words to Capture Tone, List 3

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The New SAT: Words to Capture Tone

Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!

100 SAT Words Beginning with "M"

Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!