WordNet
n. (criminal law) a plea in which the defendant claims innocence due to mental incompetence at the time [syn: plea of insanity]
Usage examples of "insanity plea".
When you show him that it's hopeless, maybe then he'll agree to an insanity plea.
Any private individual with a record of such incessant murder and robbery would be glad to cop an insanity plea.
His lawyer tried to get him off on an insanity plea, but the jury at his hearing found him sane, and he went to prison.
The Lord views the insanity plea as a Personal affront, seeing as how He made man in His own image.
Lacey knew then that if the judge didn't suppress the confession, Big John would go for an insanity plea.
Lacey knew that when the lawyer saw all the evidence against Marlin, he'd have no choice but to go for an insanity plea.