opportunistic crime; crime of opportunity
A rare legal term referring to a crime committed because external circumstances provided an easy chance, as opposed to a premeditated act. Used mainly in criminology or legal contexts.
Opportunistic crimes are distinguished from premeditated crimes.
防犯カメラの設置は機会犯の抑止に効果がある。
Installing security cameras is effective in deterring crimes of opportunity.
Refers to an impulsive crime driven by sudden emotion, whereas 機会犯 is triggered by external opportunity.
Compound of 機会 (opportunity) and 犯 (crime). The exact historical derivation is uncertain, but the term is a modern legal coinage.