Related Clues:

• Hash out differences
• Shadowbox, e.g.
• Battle verbally
• Get into it, so to speak
• Present one's case
• Present reasons for or against
• Box without a ref
• Participate on a debate team
• Have a debate
• Trade barbs
• Go toe-to-toe
• Airplane wing supporter
• Put forth reasons for or against
• Mast, yard, boom, or gaff
• Fight, but not all-out