寸分の狂いもない すんぶんのくるいもない Meanings Expression, い-adjective accurate; flawless; perfectly ordered; without deviation See also: 寸分 (すんぶん). Kanji 寸 inch. Read as スン. 分 part. Read as ブン. 狂 mad. Read as くるう. Jinuma: Japanese Dictionary · Word lists