Related Clues:

• Nay voter
• One who's against
• Definitely not a pro
• Social starter?
• Side in an argument
• One who hasn't turned pro?
• Prefix with knock
• Planning to vote no
• Knock or social attachment
• Debater's position, perhaps
• Prefix with trust
• Voting 'nay'
• Freeze beginning
• Protester
• No pro