Synonyms|150Antonyms|1|Broader|0Narrower|0Related|0
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extreme
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feather-brained
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feeble-minded
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feverish
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flaked-out
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flaky
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foolhardy
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frenzied
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frivolous
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gaga
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half-baked
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halfwitted
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have nobody home
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hysterical
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ill
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ill-advised
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incredible
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irresponsible
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light-headed
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looney
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APASmart Define. (2013). crack-brained thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/crack-brained/thesaurus/synonyms
ChicagoSmart Define. 2013. "crack-brained thesaurus" https://smartdefine.org/crack-brained/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2013, crack-brained thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/crack-brained/thesaurus/synonyms>.
MLASmart Define. "crack-brained thesaurus" 17 June 2013. Web. 25 September 2026. <https://smartdefine.org/crack-brained/thesaurus/synonyms>