View synonyms for insane

insane

[ in-seyn ]

Phonetic (Standard)IPA

adjective

(not in technical use as a medical diagnosis) not sane; not of sound mind; mentally deranged.
Synonyms: irrational, foolish, maniacal, crazy, crazed, lunatic, demented
of, relating to, or characteristic of a person who is mentally deranged:
a wild and insane look on her face.
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.
temporarily unable to think clearly:
I think I'm going insane from all the noise outside.
utterly senseless:
an insane plan.
Slang. excessive or extravagant; extreme:
This much snow in April is just insane!
Slang. astonishingly great; wonderful:
Without his insane performance, the film would've been a total flop.

insane

/ ɪnˈseɪn /

1. mentally deranged; crazy; of unsound mind
2. ( as collective noun; preceded by the )
  the insane
characteristic of a person of unsound mind
an insane stare
irresponsible; very foolish; stupid

Origin of insane¹

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

See mad.

After all, what says Christmas more than obligations, gastrointestinal distress, and insane dining companions?

Yet she spoke of his dignity in such an insane situation and when she touched on his pain she expressed her own on his behalf.

It's insane that you are losing friends in real life because of their ignorance on the Internet.

“It's insane to see what the extreme version of that type of helpless anger combined with mental illness can create,” Cook wrote.

Now we need to change the insane policies that lead to his killing.

After an hour's insane remonstrance, he gave in to his own alarm, rather than to the persuasion of his partner.

The attitude of the nineteenth century upon this point was little short of insane.

Some corporations are still denied voluntary action, as well as minors and insane persons.

It is not quite so easy to state rules that apply to insane persons because their conditions vary so greatly.

And again when an insane man has made a contract, the relief to which he is entitled depends on circumstances.

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