Related Clues:

• They're against you
• "How do you like ___ apples?"
• Anonymous ones
• Bizarro, to Superman
• A McCoy, to a Hatfield
• One to go up against
• The North and South, in the Civil War
• Axis powers, to the Allies
• "... the harder ___ fall"
• Someone to keep closer
• One against another
• Adversary in war
• Opposing military force
• Community hangout, informally
• Exes, sometimes