Englishfar-fetched
adjective
the storyline was too far-fetched:
improbable, unlikely, implausible, scarcely credible, difficult to believe, dubious, doubtful, unconvincing, incredible, unbelievable, unthinkable, beyond the bounds of possibility;
contrived, strained, labored, forced, elaborate, overdone;
fanciful, unrealistic, ridiculous, absurd, preposterous;
informal hard to swallow/take, fishy;
North American, informal hokey.
▷antonyms credible, likely.