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noun [ plural ] uk / ɪnˈseɪn / us / ɪnˈseɪn / the insane. mentally ill people: a hospital for the criminally insane.
: unable to think in a clear or sensible way. insane with jealousy. not used technically. 2. now usually offensive : used by, typical of, or intended for people having a severely disordered state of mind. an insane asylum. 3. : absurd. an insane scheme for making money. 4. : outrageously high or extreme. making insane amounts of money.
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.
(formal, law or old-fashioned, often offensive) having a serious mental illness that makes somebody unable to think or behave normally. Doctors certified him as insane. The prisoners were slowly going insane.
a. severely mentally ill, so that normal thinking and behaviour is impossible. b. ( as collective noun; preceded by the) the insane. 2. law. not responsible for one's actions or not capable of managing one's own affairs because of a defect of reason. 3. characteristic of an insane person.
People who are insane are suffering from a seriously irrational or disordered state of mind. When someone commits a crime, it's important to know if they were sane or insane. If they're insane, the penalty is different.
1. a. Of, exhibiting, or afflicted with mental derangement. Not used in psychiatric diagnosis. b. Characteristic of or associated with persons who are mentally deranged: an insane laugh; insane babbling. c. Intended for use by such persons: an insane asylum. 2. Having been determined to be in a condition that meets the legal definition of insanity.
