4
radical(adjective, important, significant, original, essential)
4
unformed(adjective, hard, simple, coarse, natural)
4
unrefined
4
unshaped
3
abortive
3
coarse
3
crucial(adjective, important, significant, original, essential)
3
early(adjective, head, beginning, original, basic)
3
foundational(adjective, simple, plain, important, significant)
3
germinal
3
inherent
3
preparatory
3
uncompleted(adjective, hard, simple, rough, fresh)
3
uncut(adjective, hard, rough, raw, basic)
3
unwrought(adjective, hard, simple, coarse, natural)
2
ABCs(simple, straightforward, basic, fundamental, uncomplicated)
2
aboriginal(adjective, head, beginning, original, prime)
2
autochthonous(first, previous, initial)
2
bottom(noun, adjective, important, significant, original)
2
clear(adjective, simple, straightforward, 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>