35 entries under elementary topic. ×

16
fundamental(adjective, body, simple, plain, material)
14
primary(adjective, body, simple, lead, plain)
13
essential(adjective, body, simple, plain, material)
12
basic(adjective, body, start, simple, plain)
12
elemental(adjective, body, simple, plain, material)
10
radical(adjective, base, important, significant, last)
8
underlying(adjective, simple, plain, base, important)
6
simple(adjective, pure, straightforward, basic, fundamental)
5
bottom(noun, adjective, important, significant, original)
5
cardinal(noun, adjective, lead, important, head)
5
prime(adjective, body, lead, material, pure)
5
rudimental(adjective, start, simple)
4
necessary(adjective, body, material, important, significant)
3
indispensable(adjective, important, significant, original, essential)
3
key(adjective, lead, important, head, significant)
3
main(adjective, lead, head, master, essential)
3
primitive(adjective, body, simple, plain, material)
2
abecedarian(simple, straightforward, basic, fundamental, uncomplicated)
2
constitutional(adjective, body, material, important, significant)
2
crucial(adjective, important, significant, original, essential)
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APASmart Define. (2015). basal thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/basal/thesaurus/synonyms
ChicagoSmart Define. 2015. "basal thesaurus" https://smartdefine.org/basal/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, basal thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/basal/thesaurus/synonyms>.
MLASmart Define. "basal thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/basal/thesaurus/synonyms>