苦虫を噛み潰したよう にがむしをかみつぶしたよう Also written 苦虫を噛みつぶしたよう Meanings Expression, な-adjective sour (expression) (literally: as if having chewed on a bitter bug) See also: 苦虫 (にがむし). Kanji 苦 bitter. Read as にがい. 虫 insect. Read as むし. 噛 bite. Read as かむ. 潰 crush. Read as つぶす. Word lists Idioms Jinuma: Japanese Dictionary · Word lists