Related Clues:

• Old-time oath
• 'I don't think so'
• Defiant reply
• See 9-Down
• 'Fuhgeddaboudit!'
• Cousin of 'harrumph'
• '___ on your life!'
• 'Nope!'
• Cry of defiance
• Slangy negative
• Emphatic no
• '___ likely!'
• 'Told you so!'
• 'You wish!'
• 'When hell freezes over!'