Translation of "unfaithful" - English-Japanese dictionary

unfaithful

adjective uk /ʌnˈfeɪθ·fəl/ us /ʌnˈfeɪθ·fəl/

having sex with someone who is not your wife, husband, or usual sexual partner

浮気な
She was unfaithful to me.

(Translation of “unfaithful” from the Cambridge English–Japanese Dictionary © Cambridge University Press)