Thesaurus: lunacy

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Definitions

1. n. Insanity or madness; properly, the kind of insanity which is broken by intervals of reason, -- formerly supposed to be influenced by the changes of the moon; any form of unsoundness of mind, except idiocy; mental derangement or alienation.
2. n. A morbid suspension of good sense or judgment, as through fanaticism.
3. n. obsolete terms for legal insanity
4. n. foolish or senseless behavior
5. 1. Insanity or madness; properly, the kind of insanity which is broken by intervals of reason, -- formerly supposed to be influenced by the changes of the moon; any form of unsoundness of mind, except idiocy; mental derangement or alienation. Brande. Burrill. Your kindred shuns your house As beaten hence by your strange lunacy. Shak. 2. A morbid suspension of good sense or judgment, as through fanaticism. Dr. H. More. Syn. -- Derangement; craziness; mania. See Insanity.
6. n:100 n. obsolete terms for legal insanity