GUILTY BUT MENTALLY ILL
guilty but mentally ill.A form of verdict in a criminal case whereby the jury rejects the
defendant’s insanity defense but still recommends psychiatric treatment because the defendant is
mentally ill. — Abbr. GBMI; GMI. — Also termed guilty but insane; guilty of the act, but so
insane as not to be responsible. See INSANITY DEFENSE. [Cases: Criminal Law 286.10.] [Blacks Law 8th]