- not plausible; provoking disbelief; unlikely
WordReference Random House Learner's Dictionary of American English © 2026
im•plau•si•ble /ɪmˈplɔzəbəl/USA pronunciation
adj.
im•plau•si•bly, adv. See -plaud-.
WordReference Random House Unabridged Dictionary of American English © 2026- not plausible; unlikely:the student's implausible story about a dog eating the computer disk.
im•plau•si•bly, adv. See -plaud-.
im•plau•si•ble
(im plô′zə bəl),USA pronunciation adj.
im•plau′si•bil′i•ty, im•plau′si•ble•ness, n.
im•plau′si•bly, adv.
- not plausible;
not having the appearance of truth or credibility:an implausible alibi.
- im-2 + plausible 1595–1605
im•plau′si•bly, adv.
- unlikely, improbable, unbelievable.
Collins Concise English Dictionary © HarperCollins Publishers::
implausible /ɪmˈplɔːzəbəl/ adj
'implausible' also found in these entries (note: many are not synonyms or translations):