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The definition of lunacy
2 Definitions of: lunacy
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- noun, (formerly) any severe mental illness
- noun, foolishness or a foolish act
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| Synonyms: | folly, foolish, madness, stupidity, aberration, idiocy, crazy, tomfoolery, foolhardy, senseless | And more... |
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| Antonyms: | sense, sanity |
From Collins
©HarperCollins 2008. Collins English Dictionary definition of lunacy