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 Dystopian fiction is far from the easiest subgenre to escape into, considering the inherent darkness and ominous warnings of what our future could become. Robert English, EW.com, 30 July 2025 In Together, Alison Brie plays a teacher named Millie who moves out of New York with her would-be-musician partner, Tim (Dave Franco), only for ominous things to start unfolding in the countryside where the two of them hope to start the next stage of their lives. Alison Willmore, Vulture, 30 July 2025 Despite the ominous report, the Patriots have received a major update on the All-Pro corner. James Brizuela, MSNBC Newsweek, 29 July 2025 People in this state search for a story that explains why everything suddenly feels uncanny and ominous. Rachel Aviv, New Yorker, 21 July 2025 See All Example Sentences for ominous
Recent Examples of Synonyms for ominous
Adjective
  • He’s replaced talk of sinister tech monopolies with embracing Big American Tech, largely refashioned as Big American AI.
    Ben Smith, semafor.com, 28 July 2025
  • Initially, it was suspected that Brewster had been hit by a car, but X-rays revealed a far more sinister truth: Brewster had been shot, leaving him with a severely fractured front leg.
    Maria Morava, MSNBC Newsweek, 27 July 2025
Adjective
  • If the sky becomes menacing and thunder becomes audible, seek out a safe place to seek shelter.
    NC Weather Bot, Charlotte Observer, 28 July 2025
  • Petsch visited the annual celebration of all things fan culture to promote the The Strangers: Chapter 2, which picks up where Chapter 1 left off — with Petsch's Maya seemingly saved from the titular Strangers' demented attack, but with the menacing Scarecrow still hunting her down.
    Ryan Coleman Updated, EW.com, 25 July 2025
Adjective
  • Many people were concerned about their financial situation, as the overall economic outlook was bleak.
    Rocky Sharma, Forbes.com, 31 July 2025
  • Morale among agency staff is bleak, according to one CDC official who spoke on the condition that they not be named for fear of reprisals.
    Brenda Goodman, CNN Money, 31 July 2025

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Cite this Entry

“Ominous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ominous. Accessed 7 Aug. 2025.

More from Merriam-Webster on ominous

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