Related Clues:

• 'Yeah, sure ...'
• "Guess again"
• ''Hah!''
• "That's unlikely"
• Cynical comeback
• 'Yeah, that'll happen'
• 'Like that'll ever happen'
• ''A likely story''
• "A likely story"
• ''Very doubtful!''
• "Nuh-uh"
• 'Yeah, yeah'
• Skeptic's reply
• 'Uh-huh, sure'
• ''Not likely!''