Related Clues:

• Side in an argument
• One who hasn't turned pro?
• Prefix with knock
• Planning to vote no
• Pen filler
• Grifter's game
• Knock or social attachment
• Note header
• Debater's position, perhaps
• Prefix with trust
• Pull a fast one
• Voting 'nay'
• Freeze beginning
• Game antecedent?
• Protester