Related Clues:

• Scoffing retort
• "As if!"
• ''That'll be the day!''
• Sarcastic reponse
• Cynic's comment
• "Oh, sure!"
• "Suuure"
• Doubting words
• "Who cares?"
• Doubter's words
• Start of a speculative comment
• "Yeah, sure, sure"
• "Oh, suuure"
• "Not likely!"
• Doubter's reply