JMdict: 2111120

百害あって一利なし 【ひゃくがいあっていちりなし】

  1. [exp] all pain, no gain; doing no good and a lot of harm; having no redeeming features; being a complete disadvantage; a hundred harms and not a single gain
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
百 Hundred ヒャク, ビャク もも
害 Harm, Injury ガイ
一 One, One Radical (no.1) イチ, イツ ひと-, ひと.つ
利 Profit, Advantage, Benefit リ き.く