49 entries under idiom topic. ×

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off one's head(adjective, sane)
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off his rocker
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out of all reason(expression, silly, foolish, unwise)
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out of one's mind(adjective, sane)
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scatter brained(expression, insanity)
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shatter brained(expression, insanity)
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sick in the head(adjective, sane)
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under the influence
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up the Pole
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APASmart Define. (2015). lunatic thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/lunatic/thesaurus/synonyms
ChicagoSmart Define. 2015. "lunatic thesaurus" https://smartdefine.org/lunatic/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, lunatic thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/lunatic/thesaurus/synonyms>.
MLASmart Define. "lunatic thesaurus" 6 August 2015. Web. 28 September 2026. <https://smartdefine.org/lunatic/thesaurus/synonyms>