Related Clues:

• 'As if!'
• Slangy dissent
• Negative slang word
• Casual denial
• ''I don't think so''
• Terse refusal
• "Not gonna happen"
• 'Fat chance'
• "I don't think so"
• 'Get real!'
• Curt turndown
• 'Don't think so!'
• Opposite of 15-Across
• "Fat chance!"
• "Don't think so"