follow Dictionary.com

Your favorite word could be our Word of the Day!

uncertainty

[uhn-sur-tn-tee] /ʌnˈsɜr tn ti/
noun, plural uncertainties for 2.
1.
the state of being uncertain; doubt; hesitancy:
His uncertainty gave impetus to his inquiry.
2.
an instance of uncertainty, doubt, etc.
3.
unpredictability; indeterminacy; indefiniteness.
Origin
1350-1400
1350-1400; Middle English uncerteynte; see un-1, certainty
Synonyms
1. hesitation, irresolution, indecision, ambivalence.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source
Examples from the web for uncertainty
  • There is little doubt that the eruptions happened, but there is uncertainty that they occurred before the extinctions.
  • There used to be a lot of fear, uncertainty, and doubt surrounding the performance impact of collisions.
  • The uncertainty surrounding climate change argues for action, not inaction.
  • Our second uncertainty might seem at first blush an outcome of the first.
  • Teleportation was long considered impossible because it violates the so-called uncertainty principle of quantum mechanics.
  • My own field of research, the quest for a unified theory, is no stranger to uncertainty.
  • Ideas shouldn't be dumped because they bring uncertainty or discomfort.
  • All of this has contributed to an atmosphere of some uncertainty.
  • Knowing where to sit in the cafeteria became routine, and it no longer filled me with uncertainty.
  • Notice that the data for the left hand is much more spread out and thus has a larger uncertainty.
British Dictionary definitions for uncertainty

uncertainty

/ʌnˈsɜːtəntɪ/
noun (pl) -ties
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
Cite This Source
Word Origin and History for uncertainty
n.

late 14c., from uncertain + -ty.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for uncertainty

Most English speakers likely know this word

Word Value for uncertainty

16
19
Scrabble Words With Friends

Quotes with uncertainty

Nearby words for uncertainty