insane

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in·sane

(in-sān'), This is a legal term referring to mental incompetence and moral irresponsibility but having no specific medical meaning.
1. Of unsound mind; severely mentally impaired; deranged; crazy.
2. Relating to insanity.
[L. in- neg. + sanus, sound, sane]

insane

[insān′]
Etymology: L, in, not, sanus, sound
a legal term describing unsound, diseased, or deranged mental functioning, particularly as it pertains to a person who is unable to provide adequate self-care if there is a need to protect the patient and the public from each other. In the United States the precise definition of this legal term varies from state to state.
Referring to unsoundness of mind; non compos mentis

insane

adjective Referring to unsoundness of mind; non compos mentis, dangerously fruity or nutty. See Insanity.

in·sane

(in-sān')
1. Of unsound mind; severely mentally impaired; deranged.
2. Relating to insanity.
[L. in- neg. + sanus, sound, sane]