noun
crime of espionage; espionage offense
Legal and news term for the criminal act of spying. Often used in contexts of national security or military law.
彼はスパイ罪で逮捕された。
He was arrested on charges of espionage.
スパイ罪は国家反逆罪に匹敵する重罪だ。
The crime of espionage is a serious offense comparable to treason.