Wiktionary
postpubescent
a. That occurs after puberty n. An individual who has passed puberty.
Usage examples of "postpubescent".
The Well World essentially reset newcomers, not to a childthat would have insulted their intelligence and been another hurdle to handlebut as a postpubescent young adult.
I should be dreaming of being in a normal body or having some postpubescent wet dreams about Kelly.