33 entries under straightforward topic. ×

23
undeveloped(adjective, simple, coarse, natural)
20
basic(adjective, hard, start, simple, plain)
19
elementary(adjective, start, simple, plain, important)
19
fundamental(adjective, simple, plain, important, head)
18
primitive(adjective, simple, plain, important, coarse)
15
primary(adjective, simple, plain, important, head)
10
elemental(adjective, simple, plain, important, significant)
10
initial(adjective, simple, plain, head, beginning)
10
underlying(adjective, simple, plain, important, significant)
8
beginning(noun, adjective, start, simple, plain)
8
essential(adjective, simple, plain, important, significant)
7
basal(adjective, start, simple, plain, important)
6
introductory(adjective, simple, plain, head, beginning)
5
abecedarian(adjective, simple, basic, fundamental)
5
original(adjective, simple, plain, important, head)
5
simple(adjective, natural, crude, basic)
3
foundational(adjective, simple, plain, important, significant)
2
ABCs(simple, basic, fundamental, uncomplicated)
2
clear(adjective, simple, basic, fundamental)
2
easy(adjective, simple, basic, fundamental)
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APASmart Define. (2015). rudimentary thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/rudimentary/thesaurus/synonyms
ChicagoSmart Define. 2015. "rudimentary thesaurus" https://smartdefine.org/rudimentary/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, rudimentary thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/rudimentary/thesaurus/synonyms>.
MLASmart Define. "rudimentary thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/rudimentary/thesaurus/synonyms>