Related Clues:

• Half a fictional land
• "No way!"
• Polite denial
• Now alternative
• "Not on your life!"
• Formal turndown
• Defiant cry
• ''When pigs fly!''
• Army retort
• When pigs whistle
• 'Not in a million years!'
• Not in a million years
• Emphatic negative
• Not even once
• Official denial