insane
To be insane is to be mentally ill. This is also a slang word for acting wacky or wild.
This word has two closely related meanings. People who are insane are suffering from mental illness, which is very serious. When someone commits a crime, it’s important to know if they were sane or insane. If they’re insane, the penalty is different. Many uses of the word are not so serious. A wild party is called insane, and car salesmen say their prices are insane. A teacher assigning six hours of homework might be told “That’s insane!”
Definitions of insane
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afflicted with or characteristic of mental derangement
“was declared
insane”“insane laughter”-
Synonyms:
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irrational
not consistent with or using reason
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unreasonable
not reasonable; not showing good judgment
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amok, amuck, berserk, demoniac, demoniacal, possessed
frenzied as if possessed by a demon
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around the bend, balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kookie, kooky, loco, loony, loopy, nuts, nutty, round the bend, wacky, whacky
informal or slang terms for mentally irregular
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brainsick, crazy, demented, disturbed, mad, sick, unbalanced, unhinged
affected with madness or insanity
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certifiable, certified
fit to be certified as insane (and treated accordingly)
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crackbrained, idiotic
insanely irresponsible
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crazed, deranged, half-crazed
driven insane
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fey, touched
slightly insane
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hebephrenic
suffering from a form of schizophrenia characterized by foolish mannerisms and senseless laughter along with delusions and regressive behavior
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lunatic, moonstruck
insane and believed to be affected by the phases of the moon
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maniac, maniacal
wildly disordered
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manic-depressive
suffering from a disorder characterized by alternating mania and depression
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maniclike
resembling the mania of manic-depressive illness
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mentally ill, unsound, unstable
suffering from severe mental illness
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non compos mentis, of unsound mind
not of sound mind, memory, or understanding; in law, not competent to go to trial
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paranoid
suffering from paranoia
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psychopathic, psychopathologic, psychopathological
suffering from an undiagnosed mental disorder
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psychotic
characteristic of or suffering from psychosis
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raving mad, wild
talking or behaving irrationally
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schizophrenic
suffering from some form of schizophrenia
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screw-loose, screwy
not behaving normally
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Antonyms:
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sane
mentally healthy; free from mental disorder
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rational
consistent with or based on or using reason
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compos mentis, of sound mind
of sound mind, memory, and understanding; in law, competent to go to trial
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in her right mind, in his right mind, in their right minds
behaving responsibly
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lucid
having a clear mind
- show more antonyms…
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irrational
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very foolish
“took
insane risks behind the wheel”-
synonyms:
harebrained, mad-
foolish
devoid of good sense or judgment
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foolish
Word Family