Search Result for "insane": 
Wordnet 3.0

ADJECTIVE (2)

1. afflicted with or characteristic of mental derangement;
- Example: "was declared insane"
- Example: "insane laughter"

2. very foolish;
- Example: "harebrained ideas"
- Example: "took insane risks behind the wheel"
- Example: "a completely mad scheme to build a bridge between two mountains"
[syn: harebrained, insane, mad]



The Collaborative International Dictionary of English v.0.48:

Insane \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.
      [1913 Webster]

   2. Used by, or appropriated to, insane persons; as, an insane
      hospital.
      [1913 Webster]

   3. Causing insanity or madness. [R.]
      [1913 Webster]

            Or have we eaten on the insaneroot
            That takes the reason prisoner ?      --Shak.
      [1913 Webster]

   4. Characterized by insanity or the utmost folly; chimerical;
      unpractical; as, an insane plan, attempt, etc.
      [1913 Webster]

            I know not which was the insane measure. --Southey.
      [1913 Webster]


WordNet (r) 3.0 (2006):

insane
    adj 1: afflicted with or characteristic of mental derangement;
           "was declared insane"; "insane laughter" [ant: sane]
    2: very foolish; "harebrained ideas"; "took insane risks behind
       the wheel"; "a completely mad scheme to build a bridge
       between two mountains" [syn: harebrained, insane, mad]