An oft-quoted bon mot (frequently attributed to Albert Einstein, Benjamin Franklin, or a number of other people who probably never said it) is that insanity may be defined as “doing the same …

INSANITY meaning: 1. a very stupid, unreasonable, or dangerous action or situation: 2. the condition of being very…. Learn more.

Insanity definition: (not in technical use as a medical diagnosis) the condition of being insane; a derangement of the mind.. See examples of INSANITY used in a sentence.

Insanity, madness, lunacy, and craziness are behaviors caused by certain abnormal mental or behavioral patterns. Insanity can manifest as violations of societal norms, including a person …

The condition of being insane; a state of mind that impedes the ability to think, reason, or behave in ways that are considered normal, esp. one caused by mental illness. Also in extended use.

Insanity is the state of being insane. The defence pleaded insanity, but the defendant was found guilty and sentenced.

Oct 30, 2017 · Definition of insanity noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Oct 23, 2025 · Explore the definition of the word "insanity," as well as its versatile usage, synonyms, examples, etymology, and more.

1. (not in technical use) the condition of being insane; mental illness or disorder. 2. Law. such unsoundness of mind as affects legal responsibility or capacity. 3. extreme folly; …

Insanity is an ongoing state of extreme mental illness, which may cause abnormal or antisocial behaviors. If you bark at cats and meow at dogs, you might suffer from insanity. The noun …