Necessitas cnlpabilis
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
Culpable necessity; unfortunate necessity; necessity which, while it excuses the act done under its compulsion, does not leave the doer entirely free from blame. The necessity which compels a man to kill another in self-defense is thus distinguished from that which requires the killing of a felon.
See 4J Bl. Comm. 187.