逆 means “reverse, opposite”

ぎゃく · gyaku

Also: inverted, wicked

Kun'yomi (Japanese reading)
さか, さかさ, さからう
On'yomi (Chinese reading)
ギャク, ゲキ

JLPT N2 · Taught in grade 5 · 9 strokes

The story

Movement (辶) with 屰, a person drawn upside down: going the wrong way. 逆 is the reverse: 逆に means on the contrary, 逆さま is upside down, and a 逆転 is a comeback that turns the whole game around.

Used in 逆転 (gyakuten, turnaround), 逆効果 (gyakukouka, the opposite effect), and 逆さま (sakasama, upside down)

More from The Order of Things

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