Related Clues:

• They don't get along
• Hostile parties
• Contenders
• Far from friends
• Opposite sides of a fight
• The other guys
• Ill-wishers
• They're against each other
• They're not for you
• North and South Korea, e.g.
• The Blue and the Gray
• Opposing teams
• The North and the South, in the Civil War
• Achilles and Hector
• They're against you