8 entries under improper topic. ×

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mediocre(adjective, unserious, lowlevel)
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middling(adjective, unserious, lowlevel)
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second-quality(adjective, unserious, lowlevel)
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second-rate(adjective, unserious, lowlevel)
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second class(adjective, unserious, lowlevel)
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second rate(adjective, unserious, lowlevel)
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third-rate(adjective, unserious, lowlevel)
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third rate(adjective, unserious, lowlevel)
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APASmart Define. (2013). world class thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/world_class/thesaurus/antonyms
ChicagoSmart Define. 2013. "world class thesaurus" https://smartdefine.org/world_class/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2013, world class thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/world_class/thesaurus/antonyms>.
MLASmart Define. "world class thesaurus" 19 May 2013. Web. 24 September 2026. <https://smartdefine.org/world_class/thesaurus/antonyms>