正当防衛

self-defense, lawful self-defense

正 correct; proper + 当 this/current; fit or apply + 防 prevent; defend against + 衛 defense; guard
noun Rare #44,101
self-defense, lawful self-defense A legal term for using force to defend yourself or someone else when legally justified.
JA: 彼の行動は正当防衛と認められた。
EN: His actions were recognized as lawful self-defense.

それとも正当防衛か

Or was it self-defense?

— アメリカン・ギャングスター (2007)

あれは正当防衛でしょ?

That was self-defense, right?

— 万引き家族 (2018)

正当防衛で強盗を撃ったのよ

I shot the robber in self-defense.

— シカゴ (2002)

彼は裁判で正当防衛を主張して無罪となった。

He was acquitted after claiming self-defense in court.