10 entries under young topic. ×

10
puerile(adjective, trait, child, immature)
8
foolish(expression, adjective, feature, state, characteristic)
7
silly(adjective, feature, person, trait, thoughtfulness)
5
immature(adjective, trait, child)
4
childish(adjective, trait, child, immature)
3
childlike(adjective, trait, child, immature)
3
infantile(adjective, trait, child, immature)
2
babyish(adjective, trait, child, immature)
2
juvenile(adjective, trait, child, immature)
-3
jejune(adjective, trait, child, immature)
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APASmart Define. (2015). unserious thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/unserious/thesaurus/synonyms
ChicagoSmart Define. 2015. "unserious thesaurus" https://smartdefine.org/unserious/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, unserious thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/unserious/thesaurus/synonyms>.
MLASmart Define. "unserious thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/unserious/thesaurus/synonyms>