badmouth
US /ˈbædˌmaʊθ/
UK /ˈbædˌmaʊθ/
動詞
悪口を言う, けなす
to criticize someone or something in a malicious or unpleasant way
例:
•
It's not fair to badmouth your colleagues behind their backs.
同僚の陰で悪口を言うのは公平ではありません。
•
She always tries to badmouth her ex-boyfriend to everyone.
彼女はいつも元彼氏の悪口を言う。