120 entries under silly topic. ×

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incompetent(poor, ridiculous, absurd, insufficient)
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incredible(adjective, preposterous, wacky, impossible)
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irrational(foolish, unwise)
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jerky(adjective, preposterous, wacky, impossible)
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kooky(foolish, unwise)
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lunatic(foolish, unwise)
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mad(foolish, unwise)
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mad as a March hare(expression, adjective, idiom, wild)
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mad as a hatter(expression, adjective, idiom, wild)
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maniacal(foolish, unwise)
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mental(foolish, unwise)
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mentally strange(expression, foolish, unwise)
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moonstruck(foolish, unwise)
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nuts(foolish, unwise)
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nutty(adjective, foolish, unwise, preposterous)
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nutty as fruitcake(expression, adjective, idiom, wild)
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of unsound mind(expression, adjective, idiom, wild)
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out to lunch(expression, adjective, idiom, wild)
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outlandish(foolish, unwise, preposterous, ludicrous)
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potty(adjective, wild, foolish, senseless)
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APASmart Define. (2015). derisory thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/derisory/thesaurus/synonyms
ChicagoSmart Define. 2015. "derisory thesaurus" https://smartdefine.org/derisory/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, derisory thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/derisory/thesaurus/synonyms>.
MLASmart Define. "derisory thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/derisory/thesaurus/synonyms>