[ uhn-sur-tn-tee ]
/ ʌnˈsɜr tn ti /

noun, plural un·cer·tain·ties for 2.

the state of being uncertain; doubt; hesitancy: His uncertainty gave impetus to his inquiry.
an instance of uncertainty, doubt, etc.
unpredictability; indeterminacy; indefiniteness.

Origin of uncertainty

1350–1400; Middle English uncerteynte; see un-1, certainty
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for uncertainty


/ (ʌnˈsɜːtəntɪ) /

noun plural -ties

Also called: uncertainness the state or condition of being uncertain
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

Word Origin and History for uncertainty



late 14c., from uncertain + -ty.

Online Etymology Dictionary, © 2010 Douglas Harper