Dictionary
in•sane
Pronunciation: (in-sān'), [key]—
adj.
1. not sane; not of sound mind; mentally deranged.
2. of, pertaining to, or characteristic of a person who is mentally deranged:
insane actions; an insane asylum.
3. utterly senseless:
an insane plan. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.