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portentous

American  
[pawr-ten-tuhs, pohr-] / pɔrˈtɛn təs, poʊr- /

adjective

  1. of the nature of a portent; momentous.

  2. ominously significant or indicative.

    a portentous defeat.

    Synonyms:
    threatening, inauspicious, unpropitious
  3. marvelous; amazing; prodigious.


portentous British  
/ pɔːˈtɛntəs /

adjective

  1. of momentous or ominous significance

  2. miraculous, amazing, or awe-inspiring; prodigious

  3. self-important or pompous

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Related Words

See ominous.

Other Word Forms

  • nonportentous adjective
  • nonportentously adverb
  • nonportentousness noun
  • portentously adverb
  • portentousness noun
  • unportentous adjective
  • unportentously adverb
  • unportentousness noun

Etymology

Origin of portentous

From the Latin word portentōsus, dating back to 1530–40. See portent, -ous

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.

Were the dialogue a bit less ornate and portentous, the story might be easier to swallow.

From The Wall Street Journal • Dec. 4, 2025

Like the album, the trailer's atmosphere is brooding and portentous.

From BBC • Jun. 18, 2025

Unable to persuade a majority of the commission to endorse their deficit-cutting recommendations, Simpson and Bowles took it upon themselves to issue a list under the portentous title “The Moment of Truth.”

From Los Angeles Times • Mar. 19, 2025

That’s when her portentous warpaint emerges, a crisp black border drawn from tear duct to wing crowning a frigid, distrustful gaze.

From Salon • Oct. 27, 2024

Before me stretched the portentous menacing road of a new decade.

From " The Great Gatsby" by F. Scott Fitzgerald