Related Clues:

• The Grays, to the Blues
• Pro's opposer
• One to keep closer?
• Any Hatfield, to a McCoy
• Thesis opener?
• Parley participant
• Hostile opponent
• Armed adversary
• Beginning to trust?
• Military adversary
• Climactic intro
• Scipio, to Hannibal
• Prefix meaning ''opposed''
• Prefix with ''trust''
• Military opponent