79 entries under essential topic. ×

4
necessary(adjective, body, material, big, important)
4
prominent(adjective, important, outstanding, head, significant)
4
ruling(adjective, excellent, important, head, significant)
4
underived(adjective, rough, important, significant, original)
3
bottom(adjective, important, significant, original)
3
critical(adjective, big, important, significant, substantial)
3
inherent(adjective, body, material, natural, animate)
3
intrinsic(adjective, important, significant, original)
3
requisite(adjective, important, significant, original)
2
integral(adjective, body, material, important, significant)
2
most(adjective, adverb, big, large)
2
substratal(adjective, simple, plain, important, significant)
1
absolute(adjective, basic, prime, fundamental)
1
axiological(adjective, important, significant, original)
1
bottom-line(adjective, important, significant, original)
1
deep-seated(adjective, original, basic, absolute)
1
grass-roots(adjective, important, significant, original)
1
imperative(big, significant, substantial, valuable)
1
innate(adjective, body, material, natural, animate)
1
meat-and-potatoes(adjective, base, important, significant, last)
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APASmart Define. (2016). primary thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/primary/thesaurus/synonyms
ChicagoSmart Define. 2016. "primary thesaurus" https://smartdefine.org/primary/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, primary thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/primary/thesaurus/synonyms>.
MLASmart Define. "primary thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/primary/thesaurus/synonyms>