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 …

Contrary to popular belief, insanity isn't defined as doing the same thing over and over and expecting a different result. And, while it is often used to describe certain states of mind, …

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.

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.

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