33 entries under childish topic. ×

1
puerile(inexperienced, impractical, half-baked, doomed, young)
1
raw(simple, crude, basic, inexperienced, unsophisticated)
1
sophomoric(impulsive, inexperienced, impractical, half-baked, young)
1
tender(inexperienced, young, undeveloped, unformed)
1
tenderfoot(inexperienced, young, undeveloped, unformed)
1
undergrown(adjective, little, inexperienced, young)
1
unseasonable(inexperienced, young, undeveloped, unformed)
1
unseasoned(inexperienced, young, undeveloped, unformed)
1
unsophisticated(simple, crude, basic, inexperienced, young)
1
wet behind ears(expression, inexperienced, young, undeveloped)
1
youthful(inexperienced, young, undeveloped, unformed)
0
juvenile(inexperienced, young, undeveloped, unformed)
0
young(inexperienced, immature, undeveloped, unformed)
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APASmart Define. (2015). underdeveloped thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/underdeveloped/thesaurus/synonyms
ChicagoSmart Define. 2015. "underdeveloped thesaurus" https://smartdefine.org/underdeveloped/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, underdeveloped thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/underdeveloped/thesaurus/synonyms>.
MLASmart Define. "underdeveloped thesaurus" 14 April 2015. Web. 29 September 2026. <https://smartdefine.org/underdeveloped/thesaurus/synonyms>