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Synonyms

precarious

American  
[pri-kair-ee-uhs] / prɪˈkɛər i əs /

adjective

  1. dependent on circumstances beyond one's control; uncertain; insecure.

    a precarious livelihood.

    Synonyms:
    indeterminate, unsure
    Antonyms:
    secure
  2. dependent on the will or pleasure of another; liable to be withdrawn or lost at the will of another.

    He held a precarious tenure under an arbitrary administration.

    Synonyms:
    undependable, unreliable, dubious, doubtful
    Antonyms:
    reliable
  3. exposed to or involving danger; dangerous; perilous; risky.

    the precarious life of an underseas diver.

    Synonyms:
    hazardous
    Antonyms:
    safe
  4. having insufficient, little, or no foundation.

    a precarious assumption.

    Synonyms:
    unfounded, baseless, groundless
    Antonyms:
    well-founded

precarious British  
/ prɪˈkɛərɪəs /

adjective

  1. liable to failure or catastrophe; insecure; perilous

  2. archaic dependent on another's will

"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 uncertain.

Other Word Forms

  • precariously adverb
  • precariousness noun
  • superprecarious adjective
  • superprecariousness noun
  • unprecarious adjective
  • unprecariousness noun

Etymology

Origin of precarious

First recorded in 1640–50; from Latin precārius “obtained by entreaty; given as a favor; borrowed; uncertain”; prayer 1

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.

"Everyone has a right to a safe, warm, affordable secure home. That isn't the case for so many people. It is so precarious, especially for younger people."

From BBC • Apr. 7, 2026

And I don’t think that they would be as susceptible to the crime that happened if they weren’t in particularly precarious times in their life.

From Los Angeles Times • Apr. 1, 2026

The situation is so precarious that Prime Minister Koo Yun Cheol has suggested that, for the first time in 35 years, driving restrictions may be imposed on the public to restrict energy consumption.

From MarketWatch • Mar. 31, 2026

Ord Minnett says Lotus’s supplies of acid and sulphur look secure at present, but fuel is more precarious.

From The Wall Street Journal • Mar. 25, 2026

“Who knew better than I on what a precarious, tottering house of cards my whole life rested?”

From "Bomb" by Steve Sheinkin