American English

Definition of unfaithful adjective from the Oxford Advanced American Dictionary

 

unfaithful

 adjective
adjective
NAmE//ʌnˈfeɪθfl//
 
unfaithful (to somebody)
 
jump to other results
having sex with someone who is not your husband, wife, or usual partner Have you ever been unfaithful to him? opposite faithful
unfaithfulness
 
jump to other results
 
noun [uncountable]
See the Oxford Advanced Learner's Dictionary entry: unfaithful