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View synonyms for insane

insane

[ in-seyn ]

adjective

  1. (not in technical use as a medical diagnosis) not sane; not of sound mind; mentally deranged.

    Synonyms: irrational, foolish, maniacal, crazy, crazed, lunatic, demented

  2. of, relating to, or characteristic of a person who is mentally deranged:

    a wild and insane look on her face.

  3. Law. considered to be or to have been affected with insanity, and therefore lacking legal responsibility or legal capacity:

    The judge deemed him criminally insane on the basis of his delusions and hallucinations.

  4. temporarily unable to think clearly:

    I think I'm going insane from all the noise outside.

  5. utterly senseless:

    an insane plan.

  6. Slang. excessive or extravagant; extreme:

    This much snow in April is just insane!

  7. Slang. astonishingly great; wonderful:

    Without his insane performance, the film would've been a total flop.



insane

/ ɪnˈseɪn /

adjective

    1. mentally deranged; crazy; of unsound mind
    2. ( as collective noun; preceded by the )

      the insane

  1. characteristic of a person of unsound mind

    an insane stare

  2. irresponsible; very foolish; stupid
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Derived Forms

  • inˈsanely, adverb
  • inˈsaneness, noun
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Other Words From

  • in·sane·ly adverb
  • in·sane·ness noun
  • pseu·do·in·sane adjective
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Word History and Origins

Origin of insane1

First recorded in 1550–60; from Latin insānus “unsound (of mind), demented, frenzied”; in- 3, sane
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Synonym Study

See mad.
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Example Sentences

If I told you some of the shapes and I showed you some, you’d be like 'that's insane'.

From BBC

“It was the most insane thing. But this is to say that you just get onstage and do whatever you can to get seen, to build your résumé.”

A couple years ago, I bought the insane giant cocoon jacket Gisele Bündchen wears in the show.

Sharon Tuschick was heading to the coast with her husband for the day and said blue tinted lights drove her "insane".

From BBC

That’s how you had Kevin McCarthy go on national TV and say that D.C. has decriminalized carjackings, which is insane.

From Slate

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