JMdict: 2419420

バカにつける薬はない 【ばかにつけるくすりはない】

  1. [exp,adj-i] a born fool is never cured; there is no cure for stupidity; there is no medicine for fools
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
Medicine, Chemical, Enamel, Gunpowder, Benefit ヤク くすり