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- Exhibiting unsoundness or disorder of mind; not sane; mad
- 1936, Dale Carnegie, “Part 1, Chapter 2. THE BIG SECRET OF DEALING WITH PEOPLE”, in How to Win Friends and Influence People, page 41:
- What is the cause of insanity? Nobody can answer such a sweeping question as that, but we know that certain diseases, such as syphilis, break down and destroy the brain cells and result in insanity. In fact, about one-half of all mental diseases can be attributed to such physical causes as brain lesions, alcohol, toxins, and injuries. But the other half—and this is the appalling part of the story—the other half of the people who go insane apparently have nothing organically wrong with their brain cells. In post-mortem examinations, when their brain tissues are studied under the highest-powered microscopes, they are found to be apparently just as healthy as yours and mine. Why do these people go insane?
- Used by, or appropriated to, insane persons
- an insane hospital
- an insane asylum
- Causing insanity or madness.
- Characterized by insanity or the utmost folly; ridiculous; impractical
- an insane plan
- an insane amount of money
- See also Thesaurus:insane
exhibiting unsoundness or disorder of mind
causing insanity or madness
characterized by insanity or the utmost folly
- The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Wiktionary:Entry layout § Translations.
- insane in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
- insane in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
- insane at OneLook Dictionary Search
insane (plural insanes)
- “insane” in Trésor de la langue française informatisé (The Digitized Treasury of the French Language).
insane f pl