Search Result for "uncertainty": 
Wordnet 3.0

NOUN (2)

1. being unsettled or in doubt or dependent on chance;
- Example: "the uncertainty of the outcome"
- Example: "the precariousness of his income"
[syn: uncertainty, uncertainness, precariousness]

2. the state of being unsure of something;
[syn: doubt, uncertainty, incertitude, dubiety, doubtfulness, dubiousness]



The Collaborative International Dictionary of English v.0.48:

Uncertainty \Un*cer"tain*ty\, n.; pl. Uncertainties.
   [1913 Webster]
   1. The quality or state of being uncertain.
      [1913 Webster]

   2. That which is uncertain; something unknown.
      [1913 Webster]

            Our shepherd's case is every man's case that quits a
            moral certainty for an uncertainty.   --L'Estrange.
      [1913 Webster]


WordNet (r) 3.0 (2006):

uncertainty
    n 1: being unsettled or in doubt or dependent on chance; "the
         uncertainty of the outcome"; "the precariousness of his
         income" [syn: uncertainty, uncertainness,
         precariousness] [ant: certainty, foregone conclusion,
         sure thing]
    2: the state of being unsure of something [syn: doubt,
       uncertainty, incertitude, dubiety, doubtfulness,
       dubiousness] [ant: certainty]