Synonyms|427Antonyms|150|Broader|0Narrower|0Related|2k

151 entries under foolish topic. ×

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dull(crazy, insane)
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enthusiastic(adjective, keen, warm, silly)
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flipped(silly, unwise)
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flipped out(expression, silly, unwise)
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freaked out(expression, silly, unwise)
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fruity(silly, unwise)
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gung ho(expression, adjective, keen, warm, silly)
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imbecile(crazy, insane)
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keen(adjective, warm, silly, crazy)
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mad as a March hare(expression, idiom, silly, unwise)
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mad as a hatter(expression, idiom, silly, unwise)
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maniacal(silly, unwise)
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mental(silly, unwise)
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mentally strange(expression, silly, unwise)
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moonstruck(silly, unwise)
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nutty as fruitcake(expression, idiom, silly, unwise)
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of unsound mind(expression, idiom, silly, unwise)
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out to lunch(expression, idiom, silly, unwise)
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psycho(silly, unwise)
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round the bend(expression, idiom, silly, unwise)
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APASmart Define. (2015). harebrained thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/harebrained/thesaurus/synonyms
ChicagoSmart Define. 2015. "harebrained thesaurus" https://smartdefine.org/harebrained/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, harebrained thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/harebrained/thesaurus/synonyms>.
MLASmart Define. "harebrained thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/harebrained/thesaurus/synonyms>