130 entries under silly topic. ×

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derisory(foolish, unwise, laughing, schtick)
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dingy(foolish, unwise)
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erratic(adjective, wild, foolish, crazy)
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flaky(foolish, crazy, mad, unwise)
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flipped(foolish, unwise)
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flipped out(expression, foolish, crazy, mad)
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foolhardy(foolish, crazy, unwise, wacky)
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frivolous(crazy, wacky)
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heedless(crazy, wacky)
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hotheaded(crazy, wacky)
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ill-conceived(foolish, unwise)
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impracticable(foolish, unwise)
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impulsive(crazy, wacky)
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inappropriate(foolish, unwise)
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inconsiderate(crazy, wacky)
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irresponsible(foolish, unwise)
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lively(crazy, wacky)
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mad as a March hare(expression, idiom, foolish, unwise)
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mad as a hatter(expression, idiom, foolish, unwise)
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maniacal(foolish, crazy, mad, unwise)
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APASmart Define. (2015). zany thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/zany/thesaurus/synonyms
ChicagoSmart Define. 2015. "zany thesaurus" https://smartdefine.org/zany/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, zany thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/zany/thesaurus/synonyms>.
MLASmart Define. "zany thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/zany/thesaurus/synonyms>