Related Clues:

• Casual affirmative
• Doubter's words
• Start of a speculative comment
• 'Okay'
• "Yeah, sure, sure"
• ''Fat chance!''
• "Oh, suuure"
• ''Yup!''
• "Not likely!"
• 'Ain't gonna happen!'
• '-- I didn't know'
• Doubter's reply
• Skeptic's challenge
• Nod's verbal equivalent
• ''Oh, you wish!''