70 entries under primary topic. ×

6
initial(adjective, simple, plain, head, beginning)
6
radical(adjective, cause, important, significant, original)
4
former(noun, last, original, old, past)
3
basal(adjective, body, simple, plain, material)
3
underived(adjective, important, significant, original, essential)
2
cardinal(adjective, important, head, significant, beginning)
2
central(adjective, top, important, significant, original)
2
constitutional(adjective, body, material, important, significant)
2
constitutive(important, significant, original, basic, vital)
2
crucial(adjective, important, significant, original, essential)
2
foundational(adjective, simple, plain, important, significant)
2
intrinsic(adjective, important, significant, original, essential)
2
key(adjective, important, head, significant, beginning)
2
necessary(adjective, body, material, important, significant)
2
previous(last, old, past, first)
2
principal(adjective, body, material, important, significant)
2
root(adjective, original, basic, fundamental)
2
substratal(adjective, simple, plain, important, significant)
2
vital(adjective, body, material, important, significant)
1
antecedent(adjective, head, beginning, fresh, prime)
11 years ago|19k views|share |citing 
APASmart Define. (2015). primitive thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/primitive/thesaurus/synonyms
ChicagoSmart Define. 2015. "primitive thesaurus" https://smartdefine.org/primitive/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, primitive thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/primitive/thesaurus/synonyms>.
MLASmart Define. "primitive thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/primitive/thesaurus/synonyms>