Related Clues:

• Minor minder
• Not for kids
• One not seen in "Peanuts"
• 21-year-old, by most accounts
• Stage of growth
• R-rated, say
• Majority member?
• Full-grown
• 18-and-over
• Grown up
• Grown-up
• Full-price payer
• Voter, e.g.
• One old enough to know better
• Former minor