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Synonyms of certain in English:


  • 1 I'm certain he's guilty
    sure, confident, positive, convinced, in no doubt, satisfied, assured, persuaded
    [Antonyms] doubtful
  • 2 it is certain that more changes are in the offing
    obvious, evident, recognized, confirmed, accepted, acknowledged, undisputed, undoubted, unquestioned
    [Antonyms] doubtful, possible, unthinkable
  • 3 they are certain to win
    sure, very likely, bound, destined
    [Antonyms] unlikely
  • 4 certain defeat
    inevitable, assured, destined, predestined;
    informal in the bag
    [Antonyms] possible, unlikely
  • 5 there is no certain cure for this
    reliable, dependable, trustworthy, foolproof, tried and tested, effective, guaranteed, sure, unfailing, infallible
    [Antonyms] unreliable
  • 6 a certain sum of money
    determined, definite, fixed, established, precise
    [Antonyms] undefined, undetermined
  • 7 a certain lady
    particular, specific, individual, special
  • 8 to a certain extent that is true
    moderate, modest, medium, middling;
    limited, small
    [Antonyms] great
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