unfaithful
adjective /ʌnˈfeɪθfl/
/ʌnˈfeɪθfl/
- unfaithful (to somebody) having sex with somebody who is not your husband, wife or usual partner
- Have you ever been unfaithful to him?
- She remained loyal to her unfaithful husband.
Oxford Collocations DictionaryUnfaithful is used with these nouns:- husband
- wife