11 entries under elementary topic. ×

15
fundamental(adjective, clear, simple, plain, pure)
3
essential(adjective, simple, plain, pure, important)
2
bottom-line(adjective, important, significant, original, essential)
2
meat-and-potatoes(adjective, base, important, significant, fresh)
2
rudimental(adjective, undemanding, realizable, primo)
2
substratal(adjective, simple, plain, important, significant)
1
axiological(adjective, important, significant, original, essential)
1
grass-roots(adjective, important, significant, original, essential)
1
integral(adjective, important, significant, original, essential)
1
substrative(adjective, important, significant, original, essential)
1
underived(adjective, important, significant, fresh, original)
11 years ago|3k views|share |citing 
APASmart Define. (2015). foundational thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/foundational/thesaurus/synonyms
ChicagoSmart Define. 2015. "foundational thesaurus" https://smartdefine.org/foundational/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, foundational thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/foundational/thesaurus/synonyms>.
MLASmart Define. "foundational thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/foundational/thesaurus/synonyms>