uncertainty
Etymology

From Middle English uncerteynte; equivalent to un- + certainty or uncertain + -ty.

Pronunciation
  • (British) IPA: /ʌnˈsɜːtənti/
  • (America) IPA: /ʌnˈsɝtənti/
Noun

uncertainty

  1. (uncountable) Doubt; the condition of being uncertain or without conviction.
    • 1897 December (indicated as 1898), Winston Churchill, chapter IV, in The Celebrity: An Episode, New York, N.Y.: The Macmillan Company; London: Macmillan & Co., Ltd., →OCLC ↗, page 51 ↗:
      “Well,” I answered, at first with uncertainty, then with inspiration, “he would do splendidly to lead your cotillon, if you think of having one.” ¶ “So you do not dance, Mr. Crocker?” ¶ I was somewhat set back by her perspicuity.
  2. (countable) Something uncertain or ambiguous.
  3. (uncountable, mathematics) A parameter that measures the dispersion of a range of measured values.
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