70 entries under primary topic. ×

1
basal(adjective, body, material, important, significant)
1
bottom(adjective, important, significant, original, essential)
1
bottom-line(adjective, important, significant, original, essential)
1
controlling(adjective, top, essential, core, key)
1
elemental(adjective, body, material, important, significant)
1
foundational(adjective, important, significant, original, essential)
1
grass-roots(adjective, important, significant, original, essential)
1
intrinsic(adjective, important, significant, natural, original)
1
meat-and-potatoes(adjective, important, significant, original, essential)
1
nitty-gritty(adjective, important, original, essential, basic)
1
original(adjective, body, material, important, significant)
1
predominant(adjective, top, essential, core, key)
1
preeminent(adjective, great, top, important, serious)
1
primordial(adjective, important, significant, original, essential)
1
root(adjective, original, basic, fundamental, hidden)
1
substratal(adjective, important, significant, original, essential)
1
substrative(adjective, important, significant, original, essential)
1
supporting(adjective, important, significant, original, essential)
1
sustaining(adjective, important, significant, original, essential)
1
theoretical(adjective, important, significant, original, essential)
10 years ago|29k views|share |citing 
APASmart Define. (2015). vital thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/vital/thesaurus/synonyms
ChicagoSmart Define. 2015. "vital thesaurus" https://smartdefine.org/vital/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, vital thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/vital/thesaurus/synonyms>.
MLASmart Define. "vital thesaurus" 2 November 2015. Web. 27 September 2026. <https://smartdefine.org/vital/thesaurus/synonyms>