lunacy
Definitions
- Mental derangement; craziness. noun …☝️ Source: The American Heritage Dictionary of the English Language, 5th Edition (view on wordnik.com)
- Intermittent mental derangement attributed to the changing phases of the moon. noun …☝️ Source: The American Heritage Dictionary of the English Language, 5th Edition (view on wordnik.com)
- Great or wild foolishness. noun …☝️ Source: The American Heritage Dictionary of the English Language, 5th Edition (view on wordnik.com)
- A wildly foolish or irrational act. noun …☝️ Source: The American Heritage Dictionary of the English Language, 5th Edition (view on wordnik.com)
- The kind of intermittent insanity formerly supposed to be subject to the change's of the moon; hence, madness in general; any unsoundness of mind. See
insanity . noun …☝️ Source: The Century Dictionary (view on wordnik.com) - In law, unsoundness of mind sufficient to incapacitate for civil transactions. The usual test is incapacity to manage one's own property and affairs. noun …☝️ Source: The Century Dictionary (view on wordnik.com)
- Synonyms Derangement, Craziness, etc. See
insanity . noun …☝️ Source: The Century Dictionary (view on wordnik.com) - 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. noun …☝️ Source: The GNU version of the Collaborative International Dictionary of English (view on wordnik.com)
- A morbid suspension of good sense or judgment, as through fanaticism. noun …☝️ Source: The GNU version of the Collaborative International Dictionary of English (view on wordnik.com)
- The state of being
mad ,insanity noun …☝️ Source: Wiktionary (view on wordnik.com) - Something deeply
misguided . noun …☝️ Source: Wiktionary (view on wordnik.com) - obsolete terms for legal insanity noun …☝️ Source: WordNet 3.0 (view on wordnik.com)
- foolish or senseless behavior noun …☝️ Source: WordNet 3.0 (view on wordnik.com)
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Etymology
- 1540s, "condition of being a lunatic," formed in English from lunatic + -cy. Originally in reference to intermittent periods of insanity, such as were believed to be triggered by the moon's cycle. The Old English equivalent was monaðseocnes "month-sickness."1540
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