Related Clues:

• 'Sorry'
• Slangy dissent
• Nope
• Negative slang word
• Casual denial
• ''I don't think so''
• Terse refusal
• "When pigs fly!"
• 'Not true!'
• "Not gonna happen"
• 'Fat chance'
• "I don't think so"
• Not in a month of Sundays
• "Ixnay"
• Curt turndown