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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 dependent on the will or pleasure of another; liable to be withdrawn or lost at the will of another.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

Synonym Usage

See uncertain.

Other Word Forms

Derived Forms

Etymology

Origin of precarious

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

Explanation

Grab for the adjective precarious when something is unstable, dangerous or difficult and likely to get worse. Are you totally broke and the people you owe money to keep calling? You're in a precarious financial situation! The Latin root of precarious means "obtained by asking or praying." This fits well as precarious always signals that help is needed desperately. If your life is precarious or you are in a precarious situation, things could become difficult, maybe even dangerous, for you. If your footing or hold on something is precarious, it is unstable or not firmly placed, so that you are likely to slip or lose your grip.

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Vocabulary lists containing precarious

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.

Fraser’s explosive performance underlines the immensity of the stakes, balancing every precarious element of this enormous mission.

From Los Angeles Times • May 29, 2026

While many seafarers stuck in the region have not been abandoned, the conflict has made an already precarious situation even more dangerous for those who are.

From BBC • May 23, 2026

In Europe, flash estimates of purchasing managers’ surveys for May and U.K. inflation data are due, while investors will watch any further developments in U.K. politics as the prime minister’s position remains precarious.

From The Wall Street Journal • May 15, 2026

Oil prices were on track for another weekly gain as the global energy situation becomes more and more precarious.

From Barron's • May 15, 2026

"He's old physically, but ideologically he's a vigorous young man. He can be depended upon in the most precarious circumstance."

From "Invisible Man" by Ralph Ellison

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