27 entries under previous topic. ×

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fundamental(simple, basic, first, unsophisticated)
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genuine(authentic, first, initial, earliest)
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opening(authentic, first, initial, earliest)
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pioneer(authentic, first, initial, earliest)
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prime(first, initial)
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prototypal(authentic, first, initial, earliest)
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starting(authentic, first, initial, inchoate)
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APASmart Define. (2013). underivative thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/underivative/thesaurus/synonyms
ChicagoSmart Define. 2013. "underivative thesaurus" https://smartdefine.org/underivative/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2013, underivative thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/underivative/thesaurus/synonyms>.
MLASmart Define. "underivative thesaurus" 28 June 2013. Web. 24 September 2026. <https://smartdefine.org/underivative/thesaurus/synonyms>