Synonyms|68Antonyms|0|Broader|0Narrower|0Related|0
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crack skull(noun, dull, strange, crazy, mad)
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crackpot(noun, dull, strange, crazy, mad)
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flake(noun, slang, sick, mad person)
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food for squirrels(noun, dull, strange, crazy, mad)
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fruit-cake(noun, slang, sick, mad person)
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fruitcake(noun, dull, strange, crazy, mad)
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goo-goo(noun, slang, sick, mad person)
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goof(noun, slang, sick, mad person)
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insane(noun, dull, strange, crazy, mad)
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jerk(noun, slang, sick, mad person)
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jerk-off(noun, slang, sick, mad person)
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jitterbug(noun, dull, strange, crazy, mad)
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knee-jerk(noun, slang, sick, mad person)
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kook(noun, slang, sick, mad person)
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loom(noun, slang, sick, mad person)
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loon(noun, slang, sick, mad person)
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looneybin(noun, slang, sick, mad person)
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loony(noun, slang, sick, mad person)
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luny(noun, slang, sick, mad person)
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mad(noun, dull, strange, crazy)
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APASmart Define. (2015). derpy thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/derpy/thesaurus/synonyms
ChicagoSmart Define. 2015. "derpy thesaurus" https://smartdefine.org/derpy/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, derpy thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/derpy/thesaurus/synonyms>.
MLASmart Define. "derpy thesaurus" 3 July 2015. Web. 21 September 2026. <https://smartdefine.org/derpy/thesaurus/synonyms>