94 entries under silly topic. ×

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foolhardy(foolish, unwise)
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foolish
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goofy(foolish, unwise)
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half-baked(foolish, unwise)
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harebrained(foolish, unwise)
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ill-conceived(adjective, wild, foolish, senseless)
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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, unwise)
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irresponsible(foolish, unwise)
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loony(foolish, unwise, unglued, well-built)
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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, adjective, idiom, wild)
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outlandish(foolish, unwise)
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outrageous(foolish, unwise)
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peculiar(foolish, unwise)
15 years ago|417 views|share |citing 
APASmart Define. (2011). mad as a march hare thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/mad_as_a_march_hare/thesaurus/synonyms
ChicagoSmart Define. 2011. "mad as a march hare thesaurus" https://smartdefine.org/mad_as_a_march_hare/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2011, mad as a march hare thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/mad_as_a_march_hare/thesaurus/synonyms>.
MLASmart Define. "mad as a march hare thesaurus" 20 May 2011. Web. 30 September 2026. <https://smartdefine.org/mad_as_a_march_hare/thesaurus/synonyms>