88 entries under silly topic. ×

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harebrained(foolish, unwise)
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ill-conceived(foolish, unwise)
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impracticable(foolish, unwise)
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imprudent(foolish, unwise)
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inane(foolish, unwise)
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inappropriate(foolish, unwise)
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irrational(foolish, crazy, insane, unwise)
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irresponsible(foolish, unwise)
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loony(foolish, unwise)
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ludicrous(foolish, unwise)
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nonsensical(foolish, unwise)
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odd(foolish, unwise)
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out of all reason(expression, idiom, foolish, unwise)
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outlandish(foolish, unwise)
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outrageous(foolish, unwise)
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peculiar(foolish, unwise)
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preposterous(foolish, unwise)
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puerile(foolish, unwise)
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quixotic(foolish, unwise)
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ridiculous(foolish, unwise)
10 years ago|2.4k views|share |citing 
APASmart Define. (2016). unzipped thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/unzipped/thesaurus/synonyms
ChicagoSmart Define. 2016. "unzipped thesaurus" https://smartdefine.org/unzipped/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, unzipped thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/unzipped/thesaurus/synonyms>.
MLASmart Define. "unzipped thesaurus" 26 February 2016. Web. 29 September 2026. <https://smartdefine.org/unzipped/thesaurus/synonyms>