93 entries under foolish topic. ×

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foolhardy(silly, unwise)
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goofy(silly, unwise)
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half-baked(silly, unwise)
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harebrained(silly, unwise)
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ill-conceived(adjective, wild, silly, senseless)
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impracticable(silly, unwise)
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imprudent(silly, unwise)
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inane(silly, unwise)
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inappropriate(silly, unwise)
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irrational(silly, unwise)
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irresponsible(silly, unwise)
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loony(silly, unwise, unglued, well-built)
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ludicrous(silly, unwise)
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nonsensical(silly, unwise)
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odd(silly, unwise)
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out of all reason(expression, adjective, idiom, wild, silly)
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outlandish(silly, unwise)
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outrageous(silly, unwise)
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peculiar(silly, unwise)
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preposterous(silly, unwise)
15 years ago|417 views|share |citing 
APASmart Define. (2011). mad as a march hare thesaurus. Retrieved September 29, 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 29, 2026).
HarvardSmart Define 2011, mad as a march hare thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/mad_as_a_march_hare/thesaurus/synonyms>.
MLASmart Define. "mad as a march hare thesaurus" 20 May 2011. Web. 29 September 2026. <https://smartdefine.org/mad_as_a_march_hare/thesaurus/synonyms>