unfaithful
🇺🇸
/ʌnˈfeɪθfl/
🇬🇧
/ʌnˈfeɪθfl/
adjective
R
not loyal or true to a spouse or partner, especially in marriage
He was unfaithful to his wife and had a secret relationship with another woman.
그는 아내에게 불성실했고 다른 여자와 비밀 연애를 했습니다.
translation
불충실한