- Definitions|1
- Thesaurus|757
- Abbreviations|0
| primitive(adjective, crude, barbaric) | |
| arrested(adjective, dull, backward, undeveloped) | |
| behindhand | |
| callow(inexperienced, young, childish, undeveloped, unformed) | |
| childish(inexperienced, young, undeveloped, unformed) | |
| crude(simple, basic, inexperienced, unsophisticated, young) | |
| defective | |
| dense | |
| feeble(adjective, weak, tiny) | |
| green(adjective, inexperienced, young, childish, undeveloped) | |
| inchoate(adjective, developed) | |
| incomplete | |
| jejune(inexperienced, young, childish, undeveloped, unformed) | |
| latent(adjective, hidden, dormant) | |
| peewee(adjective, weak, feeble, little, tiny) | |
| poor(adjective, backward) | |
| retarded(impulsive, impractical, half-baked, doomed, unplanned) | |
| unfinished(inexperienced, young, childish, undeveloped, unformed) | |
| unfledged(adjective, inexperienced, young, childish, undeveloped) | |
| unprogressive |
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| APA | Smart Define. (2015). underdeveloped thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/underdeveloped/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "underdeveloped thesaurus" https://smartdefine.org/underdeveloped/thesaurus/synonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2015, underdeveloped thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/underdeveloped/thesaurus/synonyms>. |
| MLA | Smart Define. "underdeveloped thesaurus" 14 April 2015. Web. 23 September 2026. <https://smartdefine.org/underdeveloped/thesaurus/synonyms> |