From Longman Dictionary of Contemporary Englishpubescentpu‧bes‧cent /pjuːˈbesənt/ adjective [usually before noun] HBHa pubescent boy or girl is going through puberty
Examples from the Corpus
pubescent• The less pubescent diner can cast a detached eye on this ritual from six Formica-topped tables inside the tiny deli-restaurant.• Like pubescent first-timer thirteen-year-olds, they are to be avoided if you want more from life than cheap betrayals.• Her voice had the pubescent innocence of a junior high school majorette.• But insiders say the clean-up is really aimed at booting scores of barely pubescent, panhandling road-warrior wannabes from the Avenue.• I had seen this stuff sticking out of the sides of sand-dunes, sparse as pubescent whiskers.Origin pubescent (1600-1700) Latin present participle of pubescere, from pubes; → PUBES