Did you
know?
lunatic
adjective, noun
- foolish, eccentric
(Collins English Dictionary)
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The root of the word lunatic is "lunar" or moon, which of course stems from the Latin luna. It's also the source of the German "Laune" or mood.
The term lunatic derived from the idea that humans can suffer intermittent periods of insanity that are triggered by the moon's cycles. In Old English it was referred to as "monseoc," literally "moon sick."
The moon's influence also led to the creation of the mythical "werewolf," a normal man who transforms into a half-human/half wolf when the moon is full. Some people and cultures still generally believe that lunatic things can happen during a full moon.
Lunatic can be used as a noun (He's driving like a lunatic!) or adjective (Can you believe his lunatic behaviour?). In American English, "looney" is short for the adjective form of lunatic, which may also be influenced by the "loon," a bird that is known for its wild and crazy behaviour when it tries to escape from danger.
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SYNONYMS
adjective
crazy, demented, deranged, flaky, insane, mad, maniacal, nutty, odd, psycho, screwy, strange, wacky, weird
noun
crackpot, crank, flake, fruitcake, kook, maniac, mental case, nut, psychopath, screwball, weirdo
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SMUGGLE OWAD into today's conversation
"Television has its share of lunatic shows these days."