JMdict: 2122900

愚の骨頂 【ぐのこっちょう】

  1. [exp,n] the height of folly; sheer stupidity
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
愚 Foolish, Folly, Absurdity, Stupid グ おろ.か
骨 Skeleton, Bone, Remains, Frame コツ ほね 6
頂 Place On The Head, Receive, Top Of Head, Top, Summit, Peak チョウ いただ.く, いただき 6