Jōyō kanji, Taught in junior high
JLPT level: N1
1551 of 2500 most used kanji in newspapers
Stroke count: 13
Meaning: foolish, folly, absurdity, stupid
Kunyomi: おろ.か
Onyomi: グ
Composition: 禺 心
Radical: 心
Meaning: heart
愚 （グ） foolishness, silliness, stupidity, folly, I, me
愚痴 （グチ） idle complaint, grumble, moha (ignorance, folly)
軽愚 （ケイグ） moronity, moron
大愚 （タイグ） great folly or fool
愚か （おろか） foolish, stupid, silly
愚かしい （おろかしい） foolish, stupid