80 entries under basic topic. ×

2
imperative(important, essential, critical, fundamental)
2
natural(characteristic, material, essential, living)
2
needed(adjective, important, significant, essential, critical)
2
part(element, essential, component)
2
primary(adjective, material, important, natural)
2
prime(material, important, natural, original)
2
required(important, essential, critical, fundamental)
2
underlying(adjective, important, original, vital)
1
amoebic(adjective, body, material, natural, animate)
1
anatomical(adjective, body, material, natural, animate)
1
animate(material, natural, living, functional)
1
axiological(adjective, important, significant, original, essential)
1
axiomatic(important, significant, original, vital)
1
basal(material, important, natural, original)
1
biological(material, natural, living, functional)
1
biotic(adjective, body, material, natural, animate)
1
bottom(important, significant, original, vital)
1
bottom-line(adjective, important, significant, original, essential)
1
cellular(adjective, body, material, natural, animate)
1
coal-and-ice(important, essential, critical, fundamental)
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APASmart Define. (2016). integral thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/integral/thesaurus/synonyms
ChicagoSmart Define. 2016. "integral thesaurus" https://smartdefine.org/integral/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, integral thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/integral/thesaurus/synonyms>.
MLASmart Define. "integral thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/integral/thesaurus/synonyms>