1
2

Synonym Chooser

How does the adjective portentous differ from other similar words?

The words fateful and ominous are common synonyms of portentous. While all three words mean "having a menacing or threatening aspect," portentous suggests being frighteningly big or impressive but now seldom definitely connotes forewarning of calamity.

an eerie and portentous stillness

When is it sensible to use fateful instead of portentous?

In some situations, the words fateful and portentous are roughly equivalent. However, fateful suggests being of momentous or decisive importance.

the fateful conference that led to war

When can ominous be used instead of portentous?

The words ominous and portentous are synonyms, but do differ in nuance. Specifically, ominous implies having a menacing, alarming character foreshadowing evil or disaster.

ominous rumblings from the volcano

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of portentous Another is about death itself and the portentous ride to the other side. Sezin Devi Keohler, EW.com, 29 Mar. 2025 Other portentous allegories ensue. Namwali Serpell, The New Yorker, 8 Mar. 2025 This game would have been twice as portentous if Davis had been healthy, but the 10-time All-Star who teamed up with James to lead the Lakers to the 2020 championship is out at least two more weeks with a groin injury sustained in his Mavs debut. Greg Beacham, Chicago Tribune, 26 Feb. 2025 In the 1990s, public policy, now in the form of environmental policy, reemerged as the impetus for perhaps the most portentous chapter of lithium power. IEEE Spectrum, 11 Oct. 2019 See All Example Sentences for portentous
Recent Examples of Synonyms for portentous
Adjective
  • If the sky turns ominous and thunder can be heard, find a secure place for shelter.
    CA Weather Bot, Sacbee.com, 5 Nov. 2025
  • Trying to outrun the ominous presence, Eve will face the darkest parts of herself and uncover what she is made of.
    Zac Ntim, Deadline, 4 Nov. 2025
Adjective
  • The Christos honored their promise by gifting me with a wonderful collage in addition to my one-dollar paycheck.
    Literary Hub, Literary Hub, 7 Nov. 2025
  • That scene was so incredibly awkward… and wonderful.
    Dalton Ross, Entertainment Weekly, 6 Nov. 2025
Adjective
  • But as old tensions flare between them, Katie begins to experience terrifying visions and a ghostly presence warning of something sinister lurking aboard.
    Zac Ntim, Deadline, 6 Nov. 2025
  • Which casts a show seemingly designed to bypass all judgments with respect to storytelling and taste, gliding straight to the pleasure center of some imaginary horny, enraged, shopaholic feminine id, in a fairly sinister light.
    Judy Berman, Time, 5 Nov. 2025
Adjective
  • Every few minutes the jungle deposited us onto an astonishing beach.
    David Amsden, Travel + Leisure, 5 Nov. 2025
  • The astonishing result, achieved by the CMS (Compact Muon Solenoid) collaboration, represents the first-ever observation of single top quark production with W and Z bosons, a process known as tWZ production.
    Georgina Jedikovska, Interesting Engineering, 4 Nov. 2025
Adjective
  • But the action scenes never seem to galvanize, and somewhere along the line the predator, once a ruthless, unstoppable killing machine, has simply lost its menacing mojo.
    Damon Wise, Deadline, 4 Nov. 2025
  • Fanning knows exactly to add a slightly Pollyanna-ish aura to her opportunistic yet optimistic synthetic, as well as a cold, menacing vibe when playing her evil synth twin.
    David Fear, Rolling Stone, 4 Nov. 2025
Adjective
  • Some miraculous news, unexpected news.
    Rachel Raposas, PEOPLE, 7 Nov. 2025
  • Blüemlisalphütte, its red and white shutters glinting in the miraculous sudden sunlight.
    Lucy Kehoe, AFAR Media, 31 Oct. 2025
Adjective
  • Working with the uniquely gifted Erin Foster, this unbelievable cast of talented, hilarious pros, amazing writers and incredible crew has been a truly great experience.
    Nellie Andreeva, Deadline, 4 Nov. 2025
  • Working with the uniquely gifted Erin Foster, this unbelievable cast of talented, hilarious pros, amazing writers, and incredible crew has been a truly great experience.
    Selome Hailu, Variety, 4 Nov. 2025
Adjective
  • Durant’s difference in opinion wasn’t surprising to Green, knowing that their basketball philosophies aren’t always aligned.
    Jordy Fee-Platt, New York Times, 5 Nov. 2025
  • Hannah Goldfield on the surprising endurance of Martha Stewart’s Entertaining.
    Literary Hub, Literary Hub, 4 Nov. 2025

Browse Nearby Words

Podcast

Cite this Entry

“Portentous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/portentous. Accessed 11 Nov. 2025.

More from Merriam-Webster on portentous

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!