Related Clues:

• __ lines
• McCoy, to Hatfield
• No ally
• The ''other side''
• One to watch out for
• He's not for us
• "Them," with "the"
• Archrival
• Mailman, to a canine?
• 'This is a Montague, our ___': 'Romeo and Juliet'
• ___ territory
• The Joker, to Batman
• Reds, once
• One to beat
• Jets, to Sharks