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certainty

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noun American English pronunciation: certainty /ˈsɜrt(ə)nti/ 
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singularcertainty
pluralcertainties

Related dictionary definitions

  1. 1
    [countable] something that will definitely happen or that you feel very sure about

    Victory looked like a certainty, but then we lost three games back to back.

    He clung to the certainties of his Catholic faith.

  2. 2
    [uncountable] the feeling of being completely sure about something
    with certainty:

    I can't tell you with any certainty what the outcome of the operation will be.

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