Related Clues:

• Officer's address
• "Hey you!"
• 'Hey, buddy'
• Headmaster's title
• Title for Elton John
• Old letter opener
• Sound from an exam cheater
• General address?
• "Want to hear a secret?"
• Knight address
• Singer John's title
• Listen!
• Letter starter
• Term of respect
• Verbal jab in the ribs