19 entries under simple topic. ×

18
undeveloped(adjective, dull, weak, slow)
7
rudimentary(adjective, crude, naive, hidden)
4
ignorant(slow, crude, impulsive, basic)
2
crude(basic, inexperienced, unsophisticated, young)
2
vestigial(adjective, crude, naive, hidden)
1
atavistic(adjective, rough, crude, basic)
1
austere(adjective, rough, crude, basic)
1
brutish(adjective, rough, crude, basic)
1
childlike(adjective, rough, crude, basic)
1
naive(adjective, rough, crude, basic)
1
nonliterate(adjective, rough, crude, basic)
1
preliterate(adjective, rough, crude, basic)
1
raw(crude, basic, inexperienced, unsophisticated)
1
undomesticated(adjective, rough, crude, basic)
1
unlearned(adjective, rough, crude, basic)
1
unsophisticated(crude, basic, inexperienced, young)
1
untaught(adjective, rough, crude, naive)
1
untrained(adjective, rough, crude, naive)
1
untutored(adjective, rough, crude, basic)
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APASmart Define. (2015). underdeveloped thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/underdeveloped/thesaurus/synonyms
ChicagoSmart Define. 2015. "underdeveloped thesaurus" https://smartdefine.org/underdeveloped/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, underdeveloped thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/underdeveloped/thesaurus/synonyms>.
MLASmart Define. "underdeveloped thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/underdeveloped/thesaurus/synonyms>