Related Clues:

• "Wanna bet?"
• Skeptical rejoinder
• Yup's counterpart
• ''Uh-uh!''
• "Forget it!"
• Skeptical remark
• Sarcastic retort
• ''Forget it!''
• Yup's opposite
• ''No way''
• Naysayer's word
• ''Yeah, sure''
• 'Nuh-uh'
• "Yeah, sure!"
• 'Likely story!'