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Synonyms

uncertainty

American  
[uhn-sur-tn-tee] / ʌnˈsɜr tn ti /

noun

plural

uncertainties
  1. the state of being uncertain; doubt; hesitancy.

    His uncertainty gave impetus to his inquiry.

    Synonyms:
    ambivalence, indecision, irresolution, hesitation
  2. an instance of uncertainty, doubt, etc.

  3. unpredictability; indeterminacy; indefiniteness.


uncertainty British  
/ ʌnˈsɜːtəntɪ /

noun

  1. Also called: uncertainness.  the state or condition of being uncertain

  2. an uncertain matter, contingency, etc

"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

Etymology

Origin of uncertainty

First recorded in 1350–1400; Middle English uncerteynte; equivalent to un- 1 + certainty

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.

Fears and uncertainty about the impact artificial intelligence will have on the U.S. economy, workforce, and stocks have caused markets to whipsaw and continue to confuse investors.

From Barron's

Strong economic fundamentals supported stock market performance throughout 2025 despite significant policy uncertainty.

From Los Angeles Times

However, although aluminum prices have been supported by stable alumina costs, the analyst notes that it could be partially held back by recent geopolitical uncertainties, which could weigh on demand.

From The Wall Street Journal

Meanwhile, concerns around private credit quality and renewed trade uncertainty weighed on market confidence more broadly.

From The Wall Street Journal

That uncertainty has seen a shift from "downstream" companies that run apps and software to "upstream" firms such as chipmakers, many of which are based in Asia.

From Barron's