In‐sane″ (?), a. [L. insanus. See In- not, and Sane.] 1. Exhibiting unsoundness or disorder of mind; not sane; mad; deranged in mind; delirious; distracted. See Insanity, 2.
2. Used by, or appropriated to, insane persons; as, an insane hospital.
3. Causing insanity or madness.
Or have we eaten on the insaneroot
That takes the reason prisoner? Shak.
4. Characterized by insanity or the utmost folly; chimerical; unpractical; as, an insane plan, attempt, etc.
I know not which was the insane measure. Southey.