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adjective uncertain pronunciation in British English /ʌnˈsɜː(r)t(ə)n/
  1. 1
    not clearly known or understood
    The origin of the word is uncertain.
    it is uncertain whether/why/how etc: It is uncertain how they entered the property.
    remain uncertain: Despite recent research, the precise mechanism of the virus remains uncertain.
    1. a.
      likely to change and become worse
      The economic outlook was beginning to look uncertain.
      uncertain future: The industry as a whole faces a very uncertain future.
  2. 2
    not feeling sure about what to do, whether something is true etc
    uncertain about/of: I left the meeting feeling anxious, and uncertain about what to do next.
    uncertain what/why/how etc: Greg was uncertain how to respond to this odd request.
    1. a.
      not confident
      Sara seemed more self-assured: no longer young and uncertain, but a confident professional woman.

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