妨 means “hinder, disturb, obstruct”

さまたげる · samatageru

Also: prevent, hamper

Kun'yomi (Japanese reading)
さまたげる
On'yomi (Chinese reading)
ボウ

JLPT N1 · Taught in secondary school · 7 strokes

The story

Picture a woman (女) planted squarely in your direction (方) of travel: you can't get by. 妨げる is to hinder, 妨害 is obstruction or interference, and 安眠妨害, disturbing someone's sleep, is the complaint about a noisy neighbor.

Used in 妨げる (samatageru, to hinder), 妨害 (bougai, obstruction/interference), and 安眠妨害 (anmin bougai, disturbing one's sleep)

More from Block & Refuse

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