9
foolishness
5
vulnerable
4
as time went by
4
five-year-old
4
four-year-old
4
jejune
4
prepupal
4
pubescent
4
teen
4
teenage
4
teenaged
4
tender
4
three-year-old
4
two-year-old
4
youngish
3
adolescent
3
babyish
3
boyish
3
boylike
3
childlike
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10 years ago|579 views|share |citing 
APASmart Define. (2016). immature thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/immature/thesaurus/related
ChicagoSmart Define. 2016. "immature thesaurus" https://smartdefine.org/immature/thesaurus/related (accessed September 28, 2026).
HarvardSmart Define 2016, immature thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/immature/thesaurus/related>.
MLASmart Define. "immature thesaurus" 29 February 2016. Web. 28 September 2026. <https://smartdefine.org/immature/thesaurus/related>