far–fetched

not likely to be true or to occur <an exciting thriller, but one with a far-fetched plot that no sensible person could believe> Synonyms doubtful, dubious, far-fetched, flimsy, questionable, unapt, unlikelyRelated 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, slightNear Antonyms believable, conceivable, credible, earthly, imaginable, plausible; possible, potential; liableAntonyms likely, probable