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enigma
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APASmart Define. (2013). head-scratcher thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/head-scratcher/thesaurus/narrower
ChicagoSmart Define. 2013. "head-scratcher thesaurus" https://smartdefine.org/head-scratcher/thesaurus/narrower (accessed September 25, 2026).
HarvardSmart Define 2013, head-scratcher thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/head-scratcher/thesaurus/narrower>.
MLASmart Define. "head-scratcher thesaurus" 17 June 2013. Web. 25 September 2026. <https://smartdefine.org/head-scratcher/thesaurus/narrower>