違 means “differ, be wrong”

ちがう · chigau

Also: difference

Kun'yomi (Japanese reading)
ちがう, ちがい, ちがえる, たがう, たがえる
On'yomi (Chinese reading)
イ

JLPT N3 · Taught in secondary school · 13 strokes

The story

On the road (辶), feet heading opposite ways (韋), passing without meeting. 違う is the everyday "different" or "no, that's wrong", 間違い is a mistake, and 違反 is breaking a rule.

Used in 違う (chigau, to differ/be wrong), 間違い (machigai, mistake), and 違反 (ihan, violation)

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