51 entries under original topic. ×

1
paramount(adjective, important, significant, essential)
1
primordial(adjective, rough, important, significant)
1
requisite(adjective, important, significant, essential)
1
significant(adjective, important, essential, basic)
1
structural(important, basic, vital, primary)
1
substrative(adjective, important, significant, essential)
1
supporting(adjective, important, significant, essential)
1
sustaining(adjective, important, significant, essential)
1
theoretical(adjective, important, significant, essential)
1
underived(adjective, rough, important, significant)
0
core(adjective, essential, basic, fundamental)
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APASmart Define. (2015). underlying thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underlying/thesaurus/synonyms
ChicagoSmart Define. 2015. "underlying thesaurus" https://smartdefine.org/underlying/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underlying thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underlying/thesaurus/synonyms>.
MLASmart Define. "underlying thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/underlying/thesaurus/synonyms>