Synonyms and Antonyms of improbable

  1. not likely to be true or to occur <it seems improbable that the two writers never met since they traveled in the same social circles> Synonyms doubtful, dubious, far-fetched, flimsy, questionable, unapt, unlikely Related Words implausible, impossible, inconceivable, incredible, unbelievable, unimaginable, unthinkable; absurd, bizarre, crazy, fantastic (also fantastical), foolish, insane, nonsensical, odd, outlandish, preposterous, ridiculous, unreal, wild; outside, remote, slight Near Antonyms believable, conceivable, credible, earthly, imaginable, plausible; possible, potential; liable Antonyms likely, probable

Seen and Heard

What made you want to look up improbable? Please tell us where you read or heard it (including the quote, if possible).