Related Clues:

• 'You gotta be kidding!'
• Emphatic denial
• Yup's alternative
• Informal denial
• Slangy refusal
• 'That's impossible!'
• Slangy turndown
• 'Forget it!'
• 'Don't think so'
• 'Huh-uh'
• Nah
• 'Nothing doing!'
• Cry of disbelief
• 'Nah!'
• Slangy denial