unfaithfulness
🇺🇸
/ʌnˈfeɪθflnəs/
🇬🇧
/ʌnˈfeɪθflnəs/
noun
R
Being dishonest in a romantic relationship by having a sexual relationship with someone other than your partner.
The discovery of his unfaithfulness broke her heart.
彼の裏切りの発見は彼女の心を壊しました。
translation
不貞
語形変化
Plural
unfaithfulnesses