Answer: subteen

AnswerCrossword Clue
SUBTEENFrom 9 to 12
SUBTEEN11- or 12-year-old, e.g.
subteena person approaching the teenage years
subteenof, pertaining to, or designed for subteens
subteenyoung person approaching the teens or adolescence
subteenrange of even-numbered garment sizes, chiefly from 6 to 14, designed for girls under 13