134 entries under silly topic. ×

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ape(foolish, unwise)
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bats in the belfry(expression, idiom, foolish, unwise)
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berserk(foolish, unwise)
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cracked(foolish, crazy, mad, unwise)
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deranged(foolish, crazy, mad, unwise)
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dingy(foolish, unwise)
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double talk(expression, adjective, stupid, insignificant)
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flipped(foolish, unwise)
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flipped out(expression, foolish, crazy, mad)
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floating(impractical, unlikely, unreal, idealistic)
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fruity(foolish, unwise)
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improbable(adjective, impractical, unlikely, unreal)
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ivory-tower(impractical, unlikely, unreal, idealistic)
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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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mental(foolish, unwise)
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mentally strange(expression, foolish, unwise)
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moonstruck(foolish, unwise)
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nonrealistic(impractical, unlikely, unreal, idealistic)
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APASmart Define. (2015). nonsensical thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/nonsensical/thesaurus/synonyms
ChicagoSmart Define. 2015. "nonsensical thesaurus" https://smartdefine.org/nonsensical/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, nonsensical thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/nonsensical/thesaurus/synonyms>.
MLASmart Define. "nonsensical thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/nonsensical/thesaurus/synonyms>