23
undeveloped(adjective, simple, coarse, natural, straightforward)
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)
16
vestigial(adjective, simple, fresh, crude, basic)
15
imperfect(adjective, inadequate, deficient, incomplete, wanting)
15
primary(adjective, simple, plain, important, head)
11
rudimental(adjective, start, simple, coarse, crude)
10
elemental(adjective, simple, plain, important, significant)
10
embryonic(adjective, simple, basic, fundamental, hidden)
10
immature(adjective, simple, natural, basic, fundamental)
10
initial(adjective, simple, plain, head, beginning)
10
underlying(adjective, simple, plain, important, significant)
9
incipient(adjective, head, beginning, fresh, original)
8
beginning(noun, adjective, start, simple, plain)
8
crude(adjective, natural, unrefined)
8
essential(adjective, simple, plain, important, significant)
8
first(adjective, order, important, significant, fresh)
8
rough(adjective, simple, coarse, natural, inadequate)
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APASmart Define. (2015). rudimentary thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/rudimentary/thesaurus/synonyms
ChicagoSmart Define. 2015. "rudimentary thesaurus" https://smartdefine.org/rudimentary/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, rudimentary thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/rudimentary/thesaurus/synonyms>.
MLASmart Define. "rudimentary thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/rudimentary/thesaurus/synonyms>