Insane

4 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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.
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     2. Used by, or appropriated to, insane persons; as, an insane
        hospital.
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     3. Causing insanity or madness. [R.]
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              Or have we eaten on the insaneroot
              That takes the reason prisoner ?      --Shak.
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     4. Characterized by insanity or the utmost folly; chimerical;
        unpractical; as, an insane plan, attempt, etc.
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              I know not which was the insane measure. --Southey.
        [1913 Webster]

From WordNet (r) 2.0 [wn]:

  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}, {mad}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  156 Moby Thesaurus words for "insane":
     abnormal, absurd, apish, asinine, at fever pitch, batty, bedlamite,
     befooled, beguiled, bereft of reason, besotted, bonkers, brainless,
     brainsick, buffoonish, buggy, bughouse, bugs, certifiable,
     cockeyed, crackbrained, cracked, crackers, cranky, crazed, crazy,
     credulous, cuckoo, daffy, daft, dazed, delirious, deluded,
     demented, deprived of reason, deranged, disordered, disoriented,
     distraught, dizzy, doting, dotty, dull, dumb, eccentric, fanatical,
     fatuitous, fatuous, febrile, feverish, flaky, flighty, fond, fool,
     foolheaded, foolish, frantic, frenetic, frenzied, fruity, fuddled,
     furious, futile, gaga, goofy, gulled, hallucinated, hectic,
     hysteric, idiotic, imbecile, imbecilic, inane, inept, infatuated,
     irrational, irresponsible, kinky, kooky, loco, loony, loopy,
     ludicrous, lunatic, mad, maddened, maniac, maniacal, manic,
     maudlin, mazed, mental, mentally deficient, meshuggah, mindless,
     moon-struck, moronic, neurotic, non compos, non compos mentis,
     nonsensical, not all there, not right, nuts, nutty, odd,
     of unsound mind, off, out of it, overanxious, overdesirous,
     overeager, overenthusiastic, overzealous, perfervid, potty, psycho,
     psychoneurotic, psychotic, queer, quirky, reasonless, reckless,
     ridiculous, round the bend, sappy, scatterbrained, schizo,
     schizoid, schizophrenic, screwy, senseless, sentimental, sick,
     silly, spaced out, spacy, stark-mad, stark-staring mad, strange,
     stupid, tetched, thoughtless, touched, ultrazealous, unbalanced,
     unhinged, unrealistic, unsane, unsettled, unsound, wacky,
     wandering, wet, wild, witless
  
  

From Bouvier's Law Dictionary, Revised 6th Ed (1856) [bouvier]:

  INSANE. One deprived of the use of reason, after he has arrived at the age 
  when he ought to have it, either by a natural defect or by accident. Domat, 
  Lois Civ. Lib. prel. tit. 2, s. 1, n. 11.