- unfaithful (to somebody)
having sex with somebody who is not your husband, wife or usual partner 不忠的;通奸的 Have you ever been unfaithful to him? 你对他是否有过不忠行为? She remained loyal to her unfaithful husband. 她仍然忠于对自己不忠的丈夫。
Oxford Collocations DictionaryUnfaithful is used with these nouns:- husband
- wife