Related Clues:

• "Fat chance!"
• "Impossible!" and the theme of this puzzle
• Negative word
• "No way!"
• "Don't think so"
• 'Unh-unh'
• "You gotta be kidding!"
• 'Just the opposite!'
• "It's ___ for Me to Say" (Johnny Mathis)
• 'Au contraire!' in the 1990s
• Adamant denial
• No, informally
• Negating word
• "Don't you wish!"
• 'Like that'll ever happen!'