Related Clues:

• Skeptical exclamation
• Alternative to whether
• Undoing word
• Sarcastic reply to an assurance
• "Not a chance!"
• "That'll show 'em!"
• 'Believe It Or --!'
• Word in most of the Commandments
• 'That'll be the day!'
• "Told you so!"
• Part of NIMBY
• "In your dreams!"
• "Baloney!"
• 'Like that's gonna happen!'
• With 30-Down, zero