Lunatic
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Negative Connotation
Lunatic is often seen as offensive when referring to mental illness. Referring to someone with a mental condition as a lunatic is insensitive.
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Historical Term
Originally linked to 'luna' (moon), suggesting madness was tied to lunar phases. In the past, people believed a lunatic's behavior changed with the moon.
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Extreme Behavior
Used to emphasize very foolish or out-of-the-ordinary actions. Climbing the fence into the lion's enclosure is lunatic behavior.