40 entries under elementary topic. ×

1
integral(adjective, important, significant, original, essential)
1
intrinsic(adjective, important, significant, original, essential)
1
key(adjective, important, significant, original, essential)
1
major(adjective, important, significant, original, essential)
1
meat-and-potatoes(adjective, important, significant, fresh, original)
1
necessary(adjective, important, significant, original, essential)
1
paramount(adjective, important, significant, original, essential)
1
primordial(adjective, rough, important, significant, original)
1
principal(adjective, important, significant, original, essential)
1
radical(adjective, important, significant, original, essential)
1
requisite(adjective, important, significant, original, essential)
1
rudimentary(adjective, rough, important, significant, fresh)
1
significant(adjective, important, original, essential, basic)
1
substratal(adjective, rough, important, significant, fresh)
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)
1
underlying(adjective, rough, important, significant, original)
1
vital(adjective, important, significant, original, essential)
<12>
11 years ago|590 views|share |citing 
APASmart Define. (2015). underived thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/underived/thesaurus/synonyms
ChicagoSmart Define. 2015. "underived thesaurus" https://smartdefine.org/underived/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, underived thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/underived/thesaurus/synonyms>.
MLASmart Define. "underived thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/underived/thesaurus/synonyms>