45 entries under original topic. ×

4
primary(adjective, rough, important, significant)
3
fundamental(adjective, simple, rough, important)
3
primitive(adjective, important, significant, essential)
2
elementary(adjective, rough, important, significant, fresh)
2
first(adjective, rough, important, significant, fresh)
2
prime(adjective, important, significant, essential)
1
axiological(adjective, important, significant, essential)
1
axiomatic(adjective, important, significant, basic)
1
basal(adjective, important, significant, fresh)
1
basic(adjective, simple, rough, important, significant)
1
bottom(adjective, important, significant, essential)
1
bottom-line(adjective, important, significant, essential)
1
cardinal(adjective, important, significant, essential)
1
central(adjective, important, significant, essential)
1
constitutional(adjective, important, significant, essential)
1
constitutive(adjective, important, significant, basic)
1
crucial(adjective, important, significant, essential)
1
elemental(adjective, important, significant, essential)
1
essential(adjective, simple, rough, important, significant)
1
foundational(adjective, important, significant, fresh)
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APASmart Define. (2015). underived thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underived/thesaurus/synonyms
ChicagoSmart Define. 2015. "underived thesaurus" https://smartdefine.org/underived/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underived thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underived/thesaurus/synonyms>.
MLASmart Define. "underived thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/underived/thesaurus/synonyms>