American English

Definition of uncertain adjective from the Oxford Advanced American Dictionary



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  1. 1[not before noun] uncertain (about/of something) feeling doubt about something; not sure They're both uncertain about what to do. I'm still uncertain of my feelings for him. opposite certain
  2. 2likely to change, especially in a negative or unpleasant way Our future looks uncertain. a man of uncertain temper
  3. 3not definite or decided synonym unclear It is uncertain what his role in the company will be.
  4. 4not confident synonym hesitant The baby took its first uncertain steps.
  5. Idioms
    in no uncertain terms
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    clearly and strongly I told him what I thought of him in no uncertain terms.
See the Oxford Advanced Learner's Dictionary entry: uncertain

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