Related Clues:

• Informal denial
• Slangy refusal
• Slangy turndown
• 'Forget it!'
• 'Quiet!'
• 'No way!'
• Slangy denial
• 'Uh-uh'
• 'Pipe down!'
• 'Over my dead body!'
• 'Nope'
• 'Can it!'
• Word of rejection
• 'No!', in 1-Across
• 'Nope!'