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world class
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APASmart Define. (2013). lower grade thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/lower_grade/thesaurus/antonyms
ChicagoSmart Define. 2013. "lower grade thesaurus" https://smartdefine.org/lower_grade/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2013, lower grade thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/lower_grade/thesaurus/antonyms>.
MLASmart Define. "lower grade thesaurus" 18 May 2013. Web. 22 September 2026. <https://smartdefine.org/lower_grade/thesaurus/antonyms>