愚 means “foolish”

おろか · oroka

Also: folly, absurdity, stupid

Kun'yomi (Japanese reading)
おろか
On'yomi (Chinese reading)
グ

JLPT N1 · Taught in secondary school · 13 strokes

The story

禺, once a kind of monkey, over a heart (心): picture a mind as restless as a monkey's. 愚か is foolish, 愚痴 is grumbling, 愚問 a silly question, and in old, humble letters 愚 meant "my own", as in 愚妻, my wife.

Used in 愚か (oroka, foolish), 愚痴 (guchi, grumbling), and 愚問 (gumon, silly question)

More from Vice & Folly

Learn 愚 and more kanji free on Fuji Learning · All kanji

Readings from KANJIDIC2, © EDRDG, CC BY-SA.