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Insanity

ɪnˈsanɪti

Insanity definitions

noun

Inflections:

insanities insanity

extreme foolishness or irrationality

"it might be pure insanity to take this loan"

Synonyms:
folly foolishness foolhardiness idiocy stupidity imbecility asininity lunacy madness craziness silliness senselessness brainlessness thoughtlessness irrationality illogicality absurdity ludicrousness ridiculousness
inability to think and behave in ways considered to be normal and rational, especially on account of serious mental illness (not in current technical use)

"he suffered from bouts of insanity"

Synonyms:
mental illness mental condition mental disorder madness derangement dementedness lunacy instability unsoundness of mind lack of reason insaneness
- (in legal contexts) unfitness to assume legal responsibility for one's own actions or affairs, on the grounds of mental illness, disease of the brain, or intellectual disability