Related Clues:

• 'Nuts!'
• 'Uh-huh'
• 'Yeah, right!'
• 'Phooey!'
• 'Darn!'
• 'Oh, right!'
• See 50-Across
• 'Forget it!'
• 'Don't think so'
• 'Yeah, sure!'
• Scrooge's cry
• 'Yeah, right'
• 'Oh, sure!'
• 'Oh, sure'
• 'Yeah, sure'