Related Clues:

• 'Nuh-uh'
• Yeah opposite
• Strong denial
• "Not likely"
• ''When donkeys fly!''
• 'Unh-unh!'
• ''I'm gonna pass!''
• ''Nah!''
• "Forget it"
• See 19 Across
• ''Nope!''
• "Out of the question!"
• Informal refusal
• "Sorry"
• "Can't say as I do"