Related Clues:

• 'Don't think so!'
• Opposite of 15-Across
• “Yeah, right”
• "Fat chance!"
• "No way!"
• "Don't think so"
• 'Unh-unh'
• "I don't think so!"
• No, informally
• Expression of disbelief
• Skeptic's retort
• 'Ixnay'
• Cynical snort
• Skeptical comment
• "Uh-uh!"