fifteen-year-old russian

• пятнадцатиле́тний

  of fifteen years, fifteen-year, of fifteen, fifteen-year-old

Examples

• В команде играл здоровенный переросток пятнадцати лет

  There was a huge fifteen-year-old overgrown boy playing on the team.

• Мой пятнадцатилетний сын играет в хоккей.

  My fifteen-year-old son plays hockey.