38 entries under undeveloped topic. ×

4
dull(adjective, slow, backward)
4
premature(adjective, inexperienced, young, childish)
2
arrested(adjective, dull, backward)
2
callow(inexperienced, young, childish, unformed)
2
childish(inexperienced, young, unformed)
2
crude(simple, basic, inexperienced, unsophisticated, young)
2
green(adjective, inexperienced, young, childish)
2
jejune(inexperienced, young, childish, unformed)
2
unfinished(inexperienced, young, childish, unformed)
2
unfledged(adjective, inexperienced, young, childish)
2
untimely(adjective, inexperienced, young, childish)
1
adolescent(inexperienced, young, childish, unformed)
1
baby(inexperienced, young, childish, unformed)
1
babyish(inexperienced, young, childish, unformed)
1
feeble-minded(adjective, dull, impulsive, impractical, backward)
1
half-grown(inexperienced, young, childish, unformed)
1
imperfect(adjective, inexperienced, young, childish)
1
inexperienced(young, immature, childish, unformed)
1
infantile(inexperienced, young, childish, unformed)
1
infantine(inexperienced, young, childish, unformed)
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APASmart Define. (2015). underdeveloped thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underdeveloped/thesaurus/synonyms
ChicagoSmart Define. 2015. "underdeveloped thesaurus" https://smartdefine.org/underdeveloped/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, underdeveloped thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underdeveloped/thesaurus/synonyms>.
MLASmart Define. "underdeveloped thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/underdeveloped/thesaurus/synonyms>