14 entries under rudimentary topic. ×

5
undeveloped(adjective, simple, rough, crude, basic)
2
underdeveloped(adjective, simple, crude, naive, hidden)
1
atavistic(adjective, simple, rough, crude, basic)
1
austere(adjective, simple, rough, crude, basic)
1
brutish(adjective, simple, rough, crude, basic)
1
childlike(adjective, simple, rough, crude, basic)
1
naive(adjective, simple, rough, crude, basic)
1
nonliterate(adjective, simple, rough, crude, basic)
1
preliterate(adjective, simple, rough, crude, basic)
1
undomesticated(adjective, simple, rough, crude, basic)
1
unlearned(adjective, simple, rough, crude, basic)
1
untaught(adjective, simple, rough, crude, basic)
1
untrained(adjective, simple, rough, crude, basic)
1
untutored(adjective, simple, rough, crude, basic)
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APASmart Define. (2015). vestigial thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/vestigial/thesaurus/synonyms
ChicagoSmart Define. 2015. "vestigial thesaurus" https://smartdefine.org/vestigial/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, vestigial thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/vestigial/thesaurus/synonyms>.
MLASmart Define. "vestigial thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/vestigial/thesaurus/synonyms>