Definition of implausibility noun from the Oxford Advanced Learner's Dictionary

 

implausibility

 noun
noun
BrE BrE//ɪmˌplɔːzəˈbɪləti//
 
; NAmE NAmE//ɪmˌplɔːzəˈbɪləti//
 
[uncountable]
 
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the fact of not seeming reasonable or likely to be true the implausibility of this theory opposite plausibility (1)