If you call someone foul-mouthed, you are saying they swear too much — rude words come out of them as a habit, not as a one-time slip. It is a judging word.

If you call someone foul-mouthed如果你說某人foul-mouthed you are saying they swear too much意思是他們太愛罵髒話 rude words come out of them as a habit粗話對他們來說是習慣 not as a one-time slip不是偶爾說溜嘴 It它 is a judging word是一個帶有評斷意味的詞

Parents, teachers, and newspapers use it; the person themselves would not usually smile and claim the label. It is about language, not about a dirty face or bad breath.

Parents, teachers, and newspapers父母、老師和報紙 use it會用這個詞 the person themselves但當事人自己 would not usually smile and claim the label通常不會笑著承認這個標籤 It它 is about language講的是說話的內容 not about a dirty face or bad breath不是髒臉或口臭

A foul-mouthed comedian might be famous for it; a foul-mouthed boss in an office is a problem.

A foul-mouthed comedian一個foul-mouthed的喜劇演員 might be famous for it可能因此出名 a foul-mouthed boss in an office辦公室裡一個foul-mouthed的老闆 is a problem就是個問題

Though actually, foul here is the old “morally dirty / disgusting” sense, the same foul as in foul language — not a sports foul (a broken rule), and not milk that has gone foul. The compound is plain once you hear it: a foul mouth, then made into an adjective with -ed.

Though actually不過其實 foul here這裡的foul is the old “morally dirty / disgusting” sense是比較舊的「道德上骯髒／噁心」的意思 the same foul as in foul language跟foul language裡的foul一樣 not a sports foul (a broken rule)不是運動裡犯規的foul（違反規則） and not milk that has gone foul也不是牛奶壞掉的foul The compound is plain once you hear it這個複合字聽懂了就很簡單 a foul mouth先是a foul mouth（一張髒嘴） then made into an adjective with -ed再加上-ed變成形容詞