Related Clues:

• Negative vote
• Opponent's utterance
• Prefix with lock or knock
• Con man?
• He's against it
• Prefix for disestablish-mentarianism
• Bad-mouths
• Discouraging word
• Not only that but also
• Disapproving
• Member of the other side
• Start to knock?
• Freeze front
• Matter or body start
• Opposition call