Dictionary

insane

adjective in·sane \(ˌ)in-ˈsān\

Definition of INSANE

1
:  mentally disordered :  exhibiting insanity
2
:  used by, typical of, or intended for insane persons <an insane asylum>
3
:  absurd <an insane scheme for making money>
4
:  extreme 1
in·sane·ly adverb
in·sane·ness \-ˈsān-nəs\ noun

Examples of INSANE

  1. The murderer was found to be criminally insane.
  2. She was insane with jealousy.
  3. He had an insane look in his eyes.
  4. She likes to drive at insane speeds.
  5. He had this insane idea that he could get rich by selling old computers.

Origin of INSANE

Latin insanus, from in- + sanus sane
First Known Use: circa 1550

Related to INSANE

Synonyms
balmy, barmy [chiefly British], bats, batty, bedlam, bonkers, brainsick, bughouse [slang], certifiable, crackbrained, cracked, crackers, crackpot, cranky [dialect], crazed, crazy, cuckoo, daffy, daft, demented, deranged, fruity [slang], gaga, haywire, kooky (also kookie), loco [slang], loony (also looney), loony tunes (or looney tunes), lunatic, mad, maniacal (also maniac), mental, meshuga (or meshugge also meshugah or meshuggah), moonstruck, non compos mentis, nuts, nutty, psycho, psychotic, scatty [chiefly British], screwy, unbalanced, unhinged, unsound, wacko (also whacko), wacky (also whacky), wud [chiefly Scottish], around the bend, off one's gourd, off one's head, off one's rocker, out of one's head (or mind), out to lunch [slang]
Antonyms
balanced, compos mentis, sane, sound, uncrazy

Other Psychology Terms

fetish, hypochondria, intelligence, mania, narcissism, neurosis, pathological, psychosis, schadenfreude, subliminal

insane

adjective in·sane \(ˈ)in-ˈsān\   (Medical Dictionary)

Medical Definition of INSANE

1
:  mentally disordered :  exhibiting insanity
2
:  used by, typical of, or intended for insane persons <an insane asylum>
in·sane·ly adverb

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