57 entries under fundamental topic. ×

4
elementary(adjective, characteristic, important, significant, natural)
4
profound(adjective, essential, basic, intimate)
3
particular(adjective, exact, certain, special, individual)
3
primary(adjective, important, significant, original, essential)
2
absolute(adjective, physical, material, true, basic)
2
cardinal(adjective, important, significant, original, essential)
2
core(adjective, original, essential, basic)
2
indispensable(adjective, characteristic, important, significant, natural)
2
key(adjective, important, significant, original, essential)
2
main(adjective, original, essential, basic, absolute)
2
necessary(adjective, important, significant, original, essential)
2
primitive(adjective, important, significant, original, essential)
2
principal(adjective, important, significant, original, essential)
1
basal(adjective, important, significant, original, essential)
1
bottom(adjective, important, significant, original, essential)
1
bottom-line(adjective, important, significant, original, essential)
1
chief(essential, key, principal, elementary)
1
complete(adjective, utter, basic, absolute)
1
critical(adjective, original, essential, basic)
1
crucial(adjective, important, significant, original, essential)
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APASmart Define. (2016). intrinsic thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/intrinsic/thesaurus/synonyms
ChicagoSmart Define. 2016. "intrinsic thesaurus" https://smartdefine.org/intrinsic/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2016, intrinsic thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/intrinsic/thesaurus/synonyms>.
MLASmart Define. "intrinsic thesaurus" 31 March 2016. Web. 1 October 2026. <https://smartdefine.org/intrinsic/thesaurus/synonyms>