Related Clues:

• Insect's final stage
• Minor supervisor
• Stallion, for one
• Past puberty
• Ticket-price category
• Past the pupal stage
• Young ___ (literary category)
• Mature, fully-grown
• Mature, fully grown
• Fully grown, mature
• Fully developed animal
• Fully grown and mature
• Fully mature
• Of mature age
• One is not in 28 across