Related Clues:

• Device on a door
• Prefix for lock
• Pro's opponent
• __-skid brakes
• Boycotting, perhaps
• Start for "knock" or "lock"
• What may start climactically?
• Voting ''nay''
• Not yet pro, perhaps
• "No" voter
• Support withholder
• No vote
• Attachment for "trust" or "social"
• "Nay" sayer
• Proposal foe