Definition of Insanity:

  1. Mental state of an individual judged by a court (with or without any medical evidence) to be lacking legal capacity and ability to make rational decisions. An insane accused is usually freed of responsibility for civil and criminal offenses.

  2. The state of being seriously mentally ill; madness.

Synonyms of Insanity

Mental illness, Mental disorder, Mental derangement, Madness, Insaneness, Dementia, Dementedness, Lunacy, Instability, Unsoundness of mind, Loss of reason, Aberration, Absurdity, Alienation, Amentia, Arrested development, Asininity, Backwardness, Battiness, Blithering idiocy, Brain disease, Brainlessness, Buffoonery, Clownishness, Crack-up, Crackpottedness, Crankiness, Craziness, Cretinism, Daffiness, Delirium, Delusion, Dementia praecox, Derangement, Desipience, Distraction, Dotage, Dottiness, Eccentricity, Emotional disorder, Emotional instability, Fatuity, Fatuousness, Folly, Foolery, Foolheadedness, Foolishness, Frenzy, Frivolity, Frivolousness, Functional nervous disorder, Giddiness, Goofiness, Half-wittedness, Hallucination, Hysteria, Idiocy, Idiotism, Illusion, Imbecility, Impracticality, Inanity, Ineptitude, Infantilism, Insaneness, Irrationality, Irresponsibility, Lunacy, Madness, Maladjustment, Mania, Manic-depressive psychosis, Melancholia, Mental defectiveness, Mental deficiency, Mental derangement, Mental disorder, Mental handicap, Mental illness, Mental retardation, Mindlessness, Mongolianism, Mongolism, Mongoloid idiocy, Moronism, Moronity, Nervous breakdown, Nervous disorder, Neurosis, Niaiserie, Nonsense, Nugacity, Nuttiness, Paranoia, Personality disorder, Preposterousness, Problems in living, Profound idiocy, Psychoneurosis, Psychopathy, Psychosis, Queerness, Reaction, Retardation, Retardment, Sappiness, Schizophrenia, Screwiness, Senselessness, Silliness, Simple-wittedness, Simplemindedness, Simpleness, Simplicity, Social maladjustment, Stupidity, Subnormality, Thoughtlessness, Triflingness, Triviality, Unbalance, Unreasonableness, Wackiness, Weirdness, Witlessness, Zaniness, Zanyism

How to use Insanity in a sentence?

  1. He suffered from bouts of insanity.

Meaning of Insanity & Insanity Definition