| fellow | |
| frivolous(adjective, silly, trivial) | |
| half-grown(inexperienced, young, childish, smallish, undeveloped) | |
| imp | |
| infantine(adjective, weak, tender, inexperienced, young) | |
| ingenue | |
| insubstantial | |
| kiddie | |
| late | |
| mad | |
| naive(adjective, childish) | |
| puppy(youngster, immaturity, juvenility) | |
| recent(lush, luxuriant, verdant) | |
| ridiculous | |
| small(adjective, young, undeveloped, unformed) | |
| teener(noun, teenager) | |
| teenybopper(noun, minor, kid, baby, child) | |
| title | |
| toddler(noun, kid, baby, child, smallish) | |
| underage(adjective, young, childlike, youth, childish) |
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Juvenile on
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| APA | Smart Define. (2016). juvenile thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/juvenile/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "juvenile thesaurus" https://smartdefine.org/juvenile/thesaurus/synonyms (accessed September 26, 2026). |
| Harvard | Smart Define 2016, juvenile thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/juvenile/thesaurus/synonyms>. |
| MLA | Smart Define. "juvenile thesaurus" 29 February 2016. Web. 26 September 2026. <https://smartdefine.org/juvenile/thesaurus/synonyms> |