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uncertainty

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noun uncertainty pronunciation in British English /ʌnˈsɜː(r)t(ə)nti/ 
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singularuncertainty
pluraluncertainties
  1. 1
    [uncountable] a nervous feeling that you have because you think bad things might happen

    a week of anxiety and uncertainty

    uncertainty about/over/as to:

    Minimize uncertainty about the future by taking expert advice.

    1. a.
      the fact that something is not known or has not been decided
      uncertainty about/over/as to:

      There is uncertainty as to how this research can be used.

      a degree of uncertainty (=some uncertainty):

      There's still a degree of uncertainty about the time of the accident.

      uncertainty surrounds something (=people are very uncertain about it):

      There is some uncertainty surrounding the future of the club.

  2. 2
    [countable] something that you cannot be certain about or cannot depend on

    Uncertainties remain about the factory's long-term future.

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