Jōyō kanji, Taught in junior high
JLPT level: N1
1663 of 2500 most used kanji in newspapers
Stroke count: 13
Meaning: stupid, foolish
Kunyomi: し.れる, おろか
Onyomi: チ
Composition: 疒 知
Radical: 疒
Meaning: sickness
Reading: やまいだれ
Frequency: 526
痴 （チ） foolishness, fool, moha (ignorance, folly)
痴呆 （チホウ） dementia, stupidity, foolishness, fool, idiot
愚痴 （グチ） idle complaint, grumble, moha (ignorance, folly)
白痴 （ハクチ） idiot, idiocy, profound mental retardation