Synonyms|36Antonyms|0|Broader|0Narrower|0Related|0
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lunatic(adjective, sane)
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mad(adjective, sane)
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maniac(adjective, sane)
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maniacal(adjective, sane)
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mentally ill(adjective, sane)
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moonstruck(adjective, sane)
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non compos mentis(adjective, law, sane)
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nuts(adjective, sane)
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nutty(adjective, sane)
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off(adjective, sane)
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screwy(adjective, sane)
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touched(adjective, sane)
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unbalanced(adjective, sane)
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unsound(adjective, sane)
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wacky(adjective, sane)
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wrong(adjective, sane)
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ChicagoSmart Define. 2011. "off one's head thesaurus" https://smartdefine.org/off___one%27s_head/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2011, off one's head thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/off___one%27s_head/thesaurus/synonyms>.
MLASmart Define. "off one's head thesaurus" 7 May 2011. Web. 24 September 2026. <https://smartdefine.org/off___one%27s_head/thesaurus/synonyms>