百害あって一利なし ひゃくがいあっていちりなし Meanings Expression all pain, no gain; doing no good and a lot of harm; having no redeeming features; being a complete disadvantage (literally: a hundred harms and not a single gain) Kanji 百 hundred. Read as ヒャク. 害 harm. Read as ガイ. 一 one. Read as イチ. 利 benefit Word lists Idioms Jinuma: Japanese Dictionary · Word lists