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Definition of "uncertainty" []

  • The condition of being uncertain; doubt. (noun)
  • Something uncertain: the uncertainties of modern life. (noun)
  • Statistics The estimated amount or percentage by which an observed or calculated value may differ from the true value. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "uncertainty" in a sentence
  • "The next few hours were for me fraught with fearful anxiety and uncertainty, -- yes, _uncertainty_, -- for (to my shame, let it be recorded) I actually debated in my own mind whether or not to desert these unfortunate boys of mine, who could not themselves escape the threatened danger."
  • "For example, we use the term uncertainty all the time in science."
  • "This uncertainty is the book's strength - although I wish that there were some note at the beginning or end to explain where fiction and history live in the story."