LEARNit Dictionary
unfaithfulness
noun
/ʌnˈfeɪθflnəs/
UK
/ʌnˈfeɪθflnəs/
US
1
the fact of having sex with somebody who is not your husband, wife or usual partner
خیانت, خیانت زناشویی, عدم وفاداری
opposite
faithfulness(2)