Need another word that means the same as “insanity”? Find 21 synonyms and 30 related words for “insanity” in this overview.
The synonyms of “Insanity” are: madness, insaneness, dementia, dementedness, lunacy, instability, loss of reason, folly, foolishness, foolhardiness, idiocy, stupidity, imbecility, asininity, silliness, senselessness, thoughtlessness, irrationality, illogicality, absurdity, ridiculousness
According to the Oxford Dictionary of English, “insanity” as a noun can have the following definitions:
| absurdity | The quality or state of being ridiculous or wildly unreasonable. Duncan laughed at the absurdity of the situation. |
| asininity | The quality of being asinine; stupidity combined with stubbornness. |
| dementedness | Mental deterioration of organic or functional origin. |
| dementia | Mental deterioration of organic or functional origin. |
| folly | A stupid mistake. An act of sheer folly. |
| foolhardiness | The trait of giving little thought to danger. |
| foolishness | A stupid mistake. Adjusting to an insane society is total foolishness. |
| idiocy | Extremely stupid behaviour. The idiocy of decimating yew forests. |
| illogicality | Invalid or incorrect reasoning. |
| imbecility | Retardation more severe than a moron but not as severe as an idiot. |
| insaneness | Obsolete terms for legal insanity. |
| instability | Unreliability attributable to being unstable. She showed increasing signs of mental instability. |
| irrationality | The state of being irrational; lacking powers of understanding. The sheer irrationality of continuing a policy doomed to failure. |
| loss of reason | Something that is lost. |
| lunacy | Obsolete terms for legal insanity. Such an economic policy would be sheer lunacy. |
| madness | The state of having a serious mental illness. Poetry is a sort of divine madness. |
| ridiculousness | The quality or state of deserving or inviting derision or mockery. I recognize the sheer ridiculousness of being afraid of something the size of my thumbnail. |
| senselessness | Total lack of meaning or ideas. |
| silliness | An impulsive scatterbrained manner. Children will love the sheer silliness of the enterprise. |
| stupidity | A poor ability to understand or to profit from experience. A comedy of infantile stupidity. |
| thoughtlessness | The trait of not thinking carefully before acting. |
| amok | Wildly frenzied and out of control. |
| berserk | Frenzied as if possessed by a demon. A man went berserk with an arsenal of guns. |
| certifiable | Capable of being guaranteed or certified. It is possible that he will have to return to hospital but at the moment he is not certifiable. |
| crazy | (of an angle) appearing absurdly out of place or unlikely. The monument leant at a crazy angle. |
| daft | Infatuated with. Don t ask such daft questions. |
| demented | Behaving irrationally due to anger, distress, or excitement. She was demented with worry. |
| demoniac | Relating to or characteristic of a demon or demons. Demoniac rage. |
| deranged | Driven insane. A deranged gunman. |
| disturbed | Having had the normal pattern or functioning disrupted. The treatment of disturbed children. |
| dumb | Make dumb or unheard silence. He was born deaf dumb and blind. |
| folly | A theatrical revue with glamorous female performers. Trying to drive through a blizzard is the height of folly. |
| foolery | Foolish or senseless behavior. We endured his foolery all afternoon. |
| harebrained | Very foolish. Harebrained ideas. |
| hubris | Overbearing pride or presumption. The self assured hubris among economists was shaken in the late 1980s. |
| idiot | A person of subnormal intelligence. |
| imbecility | A stupid mistake. |
| indulgence | In the Roman Catholic Church a grant by the Pope of remission of the temporal punishment in purgatory still due for sins after absolution The unrestricted sale of indulgences by pardoners was a widespread abuse during the later Middle Ages. In the Middle Ages the unrestricted sale of indulgences by pardoners became a widespread abuse. |
| lunacy | Extreme folly or eccentricity. It has been suggested that originality demands a degree of lunacy. |
| lunatic | An extremely foolish or eccentric person. This lunatic just accelerated out from the side of the road. |
| mad | Make someone mad. She gets mad when you wake her up so early. |
| maniac | Wildly disordered. A maniacal frenzy. |
| mentally | In a manner relating to the mind. Soldiers become physically and mentally exhausted. |
| nuts | Mad. The way he turns on the television as soon as he walks in drives me nuts. |
| psychopath | Someone with a sociopathic personality a person with an antisocial personality disorder psychopath was once widely used but has now been superseded by sociopath. Playground psychopaths will gather around a fight to encourage the combatants. |
| raving | In a raving manner. She d never been a raving beauty. |
| silly | Inspiring scornful pity. Don t be a silly. |
| simpleton | A person lacking intelligence or common sense. Stop grinning at me like a simpleton. |
| stupidity | The quality of being stupid or unintelligent. I can t believe my own stupidity. |
| unbalanced | Being or thrown out of equilibrium. This may give an unbalanced impression of the competition. |
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