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
    unquestionable, sure, definite, beyond question, not in doubt, indubitable, undeniable, irrefutable, indisputable; 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; unavoidable, inescapable, inexorable, ineluctable
    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
  • Definition of certain in:

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    Word of the day flippant
    Pronunciation: ˈflɪp(ə)nt
    not showing a serious or respectful attitude