10 entries under rough topic. ×

4
primary(adjective, important, significant, original)
3
fundamental(adjective, simple, important, original)
2
elementary(adjective, important, significant, fresh)
2
first(adjective, important, significant, fresh)
1
basic(adjective, simple, important, significant)
1
essential(adjective, simple, important, significant)
1
primordial(adjective, important, significant, original)
1
rudimentary(adjective, important, significant, fresh)
1
substratal(adjective, important, significant, fresh)
1
underlying(adjective, important, significant, original)
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APASmart Define. (2015). underived thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/underived/thesaurus/synonyms
ChicagoSmart Define. 2015. "underived thesaurus" https://smartdefine.org/underived/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, underived thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/underived/thesaurus/synonyms>.
MLASmart Define. "underived thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/underived/thesaurus/synonyms>