Definition of unpredictability noun from the Oxford Advanced Learner's Dictionary

      

    unpredictability

     noun
    noun
    BrE BrE//ˌʌnprɪˌdɪktəˈbɪləti//
     
    ; NAmE NAmE//ˌʌnprɪˌdɪktəˈbɪləti//
     
    [uncountable]
     
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  1. 1the quality something has when it is impossible to know in advance that it will happen or what it will be like the unpredictability of the English weather
  2. 2the quality somebody has when you cannot predict how they will behave in a particular situation His logical good sense complemented her unpredictability.
  3. opposite predictability