70 entries under primary topic. ×

1
axiological(adjective, important, significant, original, essential)
1
axiomatic(important, significant, original, basic, vital)
1
bottom(adjective, important, significant, original, essential)
1
bottom-line(adjective, important, significant, original, essential)
1
chief(top, original, essential, fundamental, key)
1
deep-seated(adjective, original, essential, basic, absolute)
1
grass-roots(adjective, important, significant, original, essential)
1
head(adjective, beginning, opening, original, prime)
1
indispensable(adjective, important, significant, original, essential)
1
integral(adjective, body, material, important, significant)
1
major(adjective, important, significant, original, essential)
1
meat-and-potatoes(adjective, important, significant, original, essential)
1
nitty-gritty(adjective, original, basic, absolute, fundamental)
1
nub(adjective, original, basic, absolute, fundamental)
1
paramount(adjective, important, significant, original, essential)
1
premier(adjective, head, beginning, fresh, prime)
1
primo(simple, straightforward, original, basic, fundamental)
1
requisite(adjective, important, significant, original, essential)
1
significant(adjective, important, original, essential, basic)
1
substrative(adjective, important, significant, original, essential)
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APASmart Define. (2015). primitive thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/primitive/thesaurus/synonyms
ChicagoSmart Define. 2015. "primitive thesaurus" https://smartdefine.org/primitive/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, primitive thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/primitive/thesaurus/synonyms>.
MLASmart Define. "primitive thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/primitive/thesaurus/synonyms>