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 dependent on the will or pleasure of another; liable to be withdrawn or lost at the will of another.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

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.

Keep Reading on Vocabulary.com

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.

"What makes my American dream precarious is that the city is extremely expensive and visas are highly unstable," he said.

From Barron's • Jul. 1, 2026

The pitch is the prime reason why England are in such a precarious position.

From BBC • Jun. 27, 2026

However, she cautioned that until a more permanent peace agreement is reached, transit remains precarious.

From The Wall Street Journal • Jun. 25, 2026

With valuations stretched and yields rising, bonds are now much more attractively priced than stocks, leaving the market in a precarious position, even after Friday’s fall, he said.

From The Wall Street Journal • Jun. 7, 2026

It was a precarious existence, to say the least.

From "The Marrow Thieves" by Cherie Dimaline

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "precarious" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com