87 entries under basic topic. ×

4
foundational(adjective, simple, plain, important, significant)
4
preliminary(adjective, simple, beginning, opening, straightforward)
4
simple(adjective, separate, plain, violent, vicious)
4
underlying(adjective, simple, plain, important, significant)
3
characteristic(adjective, separate, cool, natural, special)
3
inherent(adjective, characteristic, body, material, true)
3
principal(adjective, order, body, material, heavy)
2
abecedarian(simple, straightforward, fundamental, uncomplicated)
2
anatomical(material, natural, living, functional)
2
cardinal(adjective, important, head, significant, beginning)
2
central(adjective, important, significant, essential)
2
constitutional(adjective, characteristic, body, material, important)
2
constitutive(important, significant, vital, primary)
2
crucial(adjective, important, significant, essential)
2
indispensable(adjective, characteristic, important, significant, natural)
2
innate(adjective, characteristic, body, obscure, extraordinary)
2
integral(adjective, characteristic, body, material, important)
2
intrinsic(adjective, characteristic, physical, material, important)
2
key(adjective, important, head, significant, beginning)
2
paramount(adjective, order, heavy, important, head)
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APASmart Define. (2016). original thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/original/thesaurus/synonyms
ChicagoSmart Define. 2016. "original thesaurus" https://smartdefine.org/original/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, original thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/original/thesaurus/synonyms>.
MLASmart Define. "original thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/original/thesaurus/synonyms>