Pubescent

Sami was obsessed with pubescent girls.

The two pubescent boys hacked the public-service announcement system and warned of a fifty-foot giant woman approaching the town.

The ovaries develop with the growth of the female, so that, finally, at the pubescent period, they ripen and liberate an ovum, or germ vesicle, which is carried into the uterine cavity through the Fallopian tubes.

2008, Lou Schuler, "Foreward", in Nate Green, Built for Show, page xi […] the pubescent male brain isn't noted for its consistent engagement with reality […]

The 18-year-old [Justin] Bieber can’t quite pull off the “adult” thing just yet: His voice may have dropped a bit since the days of “Baby,” but it still mostly registers as “angelic,” and veers toward a pubescent whine at times.