noun
Almost always used in the negative phrase 胸糞(が)悪い, meaning a deeply unpleasant, sickening feeling. Rarely appears alone.
See also: 胸糞悪い
あの話を聞いて胸糞が悪くなった。
Hearing that story made me feel sick.
胸糞悪いニュースばかりで嫌になる。
I'm fed up with nothing but disgusting news.
na-adjective, noun
disgusting; sickening; revolting
Colloquial adjectival use, often as 胸糞悪い or 胸糞な. Describes something that causes visceral disgust or revulsion.
その映画は胸糞なシーンが多すぎる。
That movie has too many disgusting scenes.
胸糞悪い冗談はやめてくれ。
Stop making sickening jokes.
Mixed kana-kanji spelling, often used in casual writing.
Compound of 胸 (chest, heart) and 糞 (feces, filth), literally 'chest filth'. The exact historical derivation is uncertain, but the word evokes a visceral, gut-level disgust.