55 entries under adjective topic. ×

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primal
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primary
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prime
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primordial
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principal
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proper
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radical(basic, fundamental)
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respectable
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rudimentary(basic, fundamental)
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serious
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severe
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significant
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sizable
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substantial
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underlying
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APASmart Define. (2015). nonessential thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/nonessential/thesaurus/antonyms
ChicagoSmart Define. 2015. "nonessential thesaurus" https://smartdefine.org/nonessential/thesaurus/antonyms (accessed September 27, 2026).
HarvardSmart Define 2015, nonessential thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/nonessential/thesaurus/antonyms>.
MLASmart Define. "nonessential thesaurus" 10 April 2015. Web. 27 September 2026. <https://smartdefine.org/nonessential/thesaurus/antonyms>