107 entries under basic topic. ×

10
elementary(adjective, pure, important, head, significant)
9
radical(importance, important, job, significant, original)
9
vital(adjective, body, importance, material, important)
8
elemental(adjective, body, material, pure, important)
7
master(adjective, lead, important, head, significant)
7
primitive(adjective, body, start, material, important)
7
primordial(adjective, start, important, head, significant)
6
basal(adjective, body, lead, material, pure)
6
perfect(adjective, form, good, make, place)
5
foundational(adjective, pure, important, significant, original)
5
momentous(adjective, good, intense, important, significant)
5
necessary(adjective, body, material, important, significant)
5
rudimentary(adjective, important, head, significant, beginning)
5
underlying(adjective, important, significant, original, essential)
4
overruling(adjective, importance, serious, essential)
4
quintessential(adjective, fine, model, significant, standard)
4
ruling(adjective, excellent, important, head, significant)
3
significant(adjective, good, important, original, essential)
3
animate(verb, adjective, body, start, influence)
3
constitutional(adjective, body, material, important, significant)
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APASmart Define. (2016). prime thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/prime/thesaurus/synonyms
ChicagoSmart Define. 2016. "prime thesaurus" https://smartdefine.org/prime/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, prime thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/prime/thesaurus/synonyms>.
MLASmart Define. "prime thesaurus" 29 March 2016. Web. 20 September 2026. <https://smartdefine.org/prime/thesaurus/synonyms>