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insane Definition

in·sane (in sān)

adjective

  1. not sane; mentally ill or deranged; demented; mad: not a technical term
  2. ☆ of or for insane people an insane asylum
  3. very foolish, impractical, extravagant, etc.; senseless

Etymology: L insanus

insane Related Forms
in·sanely adverb
insane Synonyms

insane

modif.

  1. Deranged

    crazy, crazed, mad, wild, raging, frenzied, lunatic, schizophrenic, psychotic, psychopathic, psychoneurotic, paranoid, non compos mentis (Latin), maniacal, raving, demented, rabid, berserk, unbalanced, unhinged, act of one's mind, out of one's head, moonstruck, unsettled, mentally unsound, mentally diseased, sick, suffering from hallucinations, bereft of reason, daft, deluded, possessed, stark mad, having a devil, obsessed, disordered, touched, addlebrained, addlepated, addleheaded, nutty*, loony*, nuts*, schizo*, schizzy*, tetched*, balmy*, screwy*, loco*, off the wall*, wacko*, cuckoo*, bughouse*, crazy as a coot*, mad as a March hare*, gone*, derailed*, half-cocked*, haywire*, bats*, batty*, off the beam*, having bats in the belfry*, round the bend*, bonkers*, unglued*, nutty as a fruitcake*, off one's nut*, off one's rocker*, out of one's gourd*, dotty*, pixilated*, cracked*, having a few buttons missing*, one can short of a six-pack*, frothing at the mouth*, bananas*, not playing with a full deck*, out to lunch*, not all there*, wigged out*, off the deep end*; see also sick, violent 2, 4.

    Antonyms sane*, rational, sensible.

  2. Utterly foolish

    madcap, daft, idiotic; see stupid 1.

insane Usage Examples

Modifying Another Word

  • criminally: At last report he was in a prison for the criminally insane in England.
  • clinically: There had been a recent period of about five weeks during which, Alistair came to realize, he had gone clinically insane.
  • dangerously: When I finally convinced her that it was the bird's picture I wanted, she looked at me like I was dangerously insane.
  • hopelessly: Perhaps May has been hopelessly insane from the start.
  • utterly: I find being utterly insane a very useful thing.
  • temporarily: The verdict was: " suicide while temporarily insane.

Preposition: for

  • assassination: Tell me your news. ^top Re: Chatting 07/02/06 - PV declared clinically insane for attempted assassination of Kal!

Adjective complement with noun phrase

  • drive: The constant influx of random thoughts threatens to drive the Slayer insane.

Modifies a noun

  • rambling: Trusty readers, do mail in with your thoughts, comments, insane ramblings.
  • asylum: Getting home to the insane asylum is, of course, contingent on my having a passport.
  • stunt: He appears in completely balmy actions movies, doing insane stunts.
  • genius: However a close 2nd has to be the insane genius that is Bruno.
  • amount: These things must really be a huge amount of work - I'm guessing they take an insane amount of time to do?
  • desire: In his insane desire for revenge he had laid all shame aside.

Used with adjective complement

  • certify: Synopsis: Sparrow of M17, hearing James ' cover is blown, quietly orders him certified insane.
  • declare: Chile's Foreign Minister says Pinochet must either stand trial or be declared insane.
  • go: I thought I was going insane, I kept singing the theme song to Big Cook Little Cook.
  • seem: But to not have any address details for me seems insane.
  • drive: Working daily in thick jungle against the sun and rain, Men with fantasies of hunger, some men driven insane.
  • become: But he was later captured, and became insane before he finally died in a Danish prison.
insane Quotes

Ce n'est gue'  re que dans les asiles que les coquettes gardent avec ente"  tement une foi entie'  re en des regards absents; normalement, elles re¤  clament des te¤  moins. Women fond of dress are hardly ever entirely satisfied not to be seen, except among the insane; usually they want witnesses.

—de Beauvoir, Simone

L'homme est bien insense¤  . Il ne s c° auroit forger un ciron, et forge des Dieux a'   douzaines. Man is quite insane. He wouldn't know how to make a maggot, and he makes Gods by the dozen.

—Montaigne, Michel Eyquem de

Browse dictionary entries near insane

  1. insalubrious
  2. insalivate
  3. ins
  4. inrush
  5. inroad
  6. INRIA
  7. INRI
  8. inquisitorial
  9. inquisitor
  10. inquisitive
  1. insanely
  2. insanitary
  3. insanity
  4. insanity defense
  5. insatiable
  6. insatiate
  7. inscape
  8. inscribe
  9. inscription
  10. inscrutable