39 entries under elementary topic. ×

1
meat-and-potatoes(adjective, important, significant, original, essential)
1
necessary(adjective, important, significant, original, essential)
1
original(adjective, obscure, extraordinary, superior, important)
1
paramount(adjective, important, significant, original, essential)
1
primary(adjective, important, significant, original, essential)
1
prime(adjective, important, significant, original, essential)
1
primitive(adjective, important, significant, original, essential)
1
principal(adjective, important, significant, original, essential)
1
radical(adjective, important, significant, original, essential)
1
requisite(adjective, important, significant, original, essential)
1
rudimentary(adjective, important, significant, original, essential)
1
significant(adjective, important, original, essential, basic)
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
underived(adjective, important, significant, original, essential)
1
underlying(adjective, important, significant, original, essential)
1
vital(adjective, important, significant, original, essential)
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APASmart Define. (2015). theoretical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/theoretical/thesaurus/synonyms
ChicagoSmart Define. 2015. "theoretical thesaurus" https://smartdefine.org/theoretical/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, theoretical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/theoretical/thesaurus/synonyms>.
MLASmart Define. "theoretical thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/theoretical/thesaurus/synonyms>