From Longman Dictionary of Contemporary Englishimplausibleim‧plau‧si‧ble /ɪmˈplɔːzəbəl $ -ˈplɒː-/ adjective BELIEVEdifficult to believe and therefore unlikely to be true OPP plausibleimplausible theory/idea/explanation etc Margaret found his excuse somewhat implausible. It’s not entirely implausible that a galaxy could be identical to our own. —implausibly adverb —implausibility /ɪmˌplɔːzəˈbɪləti $ -ˌplɒː-/ noun [uncountable]
Examples from the Corpus
implausible• Well, you and other men of science seem to assume two things which I find rather implausible.• The idea that a virus could wipe out an entire city so quickly seems a little implausible.• But it indicates that the idea of allergies affecting the mind - and viceversa - is not implausible.• But the tremendous earthquakes they showed were somewhat implausible.• Moreover in many cases it is implausible.• While unlikely, this is not in principle altogether implausible, and so the wrong answer would be reached.• All three of Kane's categories suffer from implausible assumptions which belong in the realms of racist folklore rather than scientific inquiry.• Jill says she can earn $50,000 from the job, but this is an implausible figure.• Miss Harris' experience of healing, however implausible it seems, is common in religious meetings.• But in fact it seems most implausible the ether should do this.• However, I would agree with Searle that this possibility has been rendered rather implausible, to say the least. 