Synonym Chooser

How does the adjective ominous differ from other similar words?

The words fateful and portentous are common synonyms of ominous. While all three words mean "having a menacing or threatening aspect," ominous implies having a menacing, alarming character foreshadowing evil or disaster.

ominous rumblings from the volcano

Where would fateful be a reasonable alternative to ominous?

The words fateful and ominous can be used in similar contexts, but fateful suggests being of momentous or decisive importance.

the fateful conference that led to war

When can portentous be used instead of ominous?

Although the words portentous and ominous have much in common, portentous suggests being frighteningly big or impressive but now seldom definitely connotes forewarning of calamity.

an eerie and portentous stillness

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 ominous Hallmarks of the best Halloween travel destinations usually entail a moody fall landscape, local legends that involve a tetchy ghost, vampire, or other variety of ominous being, and themed activities like pumpkin patches and cemetery tours. Nicole Kliest, Vogue, 18 Oct. 2025 This isn’t as ominous as, say, the GOP effort to steal the 2020 presidential election with absurd claims, bad lawyers and a mob attack on the Capitol. Steven Greenhut, Oc Register, 12 Oct. 2025 The more ominous uncertainty is how OpenAI will pay off its increasingly convoluted bets. Andrew R. Chow, Time, 10 Oct. 2025 Adames had an ominous start to his Giants’ career. Grant Brisbee, New York Times, 10 Oct. 2025 See All Example Sentences for ominous
Recent Examples of Synonyms for ominous
Adjective
  • Their double life soon gets complicated when a rival boy band harboring a sinister secret begins stealing their fans.
    Ingrid Vasquez, PEOPLE, 25 Oct. 2025
  • Candyman, the Candyman franchise (1992–1999; 2021) Helen Lyle (Virginia Madsen) finds out that adoration and horror don't mix when she is faced with the attachment of the sinister Candyman (Tony Todd) in the 1992 film classic.
    Steven Thrash, Entertainment Weekly, 24 Oct. 2025
Adjective
  • For bones, spirits, and some menacing dolls, here’s where to go for a fright.
    Sophie Friedman, AFAR Media, 22 Oct. 2025
  • But an uninspired and shallow story – which includes a rape scene demanded by the studio – hampers his attempts to entice us with a chilling and menacing tone.
    Rory Doherty, Vulture, 20 Oct. 2025
Adjective
  • These are bleak times, and as fans continue to mourn the club’s decline, West Ham’s hierarchy have shifted their focus to the January transfer window.
    Roshane Thomas, New York Times, 25 Oct. 2025
  • As with many of Burton's best films, the real magic is the nuggets of human profundity hidden within the bleak imagery and whimsical comedy.
    Chris Snellgrove, Entertainment Weekly, 24 Oct. 2025

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Cite this Entry

“Ominous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ominous. Accessed 28 Oct. 2025.

More from Merriam-Webster on ominous

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