Synonyms: implausible, farfetched
Definition: highly imaginative but unlikely
Usage: a farfetched excuse; an implausible explanation
Similar words: unlikely
Definition: has little chance of being the case or coming about
Usage: an unlikely story; an unlikely candidate for reelection; a butcher is unlikely to preach vegetarianism
Synonyms: implausible
Definition: having a quality that provokes disbelief
Usage: gave the teacher an implausible excuse
Similar words: improbable, unbelievable, unconvincing, unlikely
Definition: having a probability too low to inspire belief