Related Clues:

• 'Nuts!'
• 'You gotta be kidding!'
• Emphatic denial
• Yup's alternative
• 'Gotcha!'
• 'Yeah, right!'
• 'Phooey!'
• See 1-Across
• Informal denial
• Slangy refusal
• Haughty refusal
• '___ so!'
• 'I knew it!'
• 'That's impossible!'
• Sondheim's '___ While I'm Around'