85 entries under fundamental topic. ×

1
bottom(adjective, important, significant, original, essential)
1
bottom-line(adjective, important, significant, original, essential)
1
chief(top, original, essential, key)
1
clear(simple, straightforward, basic, uncomplicated)
1
congenital(adjective, original, basic, absolute)
1
deep-seated(adjective, original, essential, basic, absolute)
1
duck soup(expression, simple, straightforward, basic)
1
facile(simple, straightforward, basic, uncomplicated)
1
inborn(adjective, original, basic, absolute)
1
inbred(adjective, original, basic, absolute)
1
indispensable(adjective, important, significant, original, essential)
1
inherent(adjective, body, material, natural, animate)
1
innate(adjective, body, material, natural, animate)
1
main(adjective, top, original, essential, basic)
1
meat-and-potatoes(adjective, important, significant, original, essential)
1
meat and potatoes(expression, adjective, idiom, simple, plain)
1
nitty-gritty(adjective, original, basic, absolute)
1
nub(adjective, original, basic, absolute)
1
prefatory(simple, straightforward, basic, uncomplicated)
1
preliminary(simple, straightforward, basic, uncomplicated)
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APASmart Define. (2015). primitive thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/primitive/thesaurus/synonyms
ChicagoSmart Define. 2015. "primitive thesaurus" https://smartdefine.org/primitive/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, primitive thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/primitive/thesaurus/synonyms>.
MLASmart Define. "primitive thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/primitive/thesaurus/synonyms>