Related Clues:

• Knock or social attachment
• Note header
• Debater's position, perhaps
• Prefix with trust
• Pull a fast one
• Freeze beginning
• Game antecedent?
• Protester
• No pro
• Prefix with 109-Across
• Body or corrosion beginning
• Beginning to freeze?
• Opposed (to)
• Voting no on
• ''Nay!'' sayer