English

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

 

unfaithfulness

 noun
noun
BrE BrE//ʌnˈfeɪθflnəs//
 
; NAmE NAmE//ʌnˈfeɪθflnəs//
 
[uncountable]
 
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the fact of having sex with somebody who is not your husband, wife or usual partner opposite faithfulness (2)