Related Clues:

• ''Nothin' doin' ''
• "Sorry, can't"
• 'Uh-unh'
• "Forget about it"
• "Nothing doing"
• 'Not for me'
• "Ain't happening!"
• ''I ain' gonna!''
• Rural denial
• "Rather not!"
• 54-Across's opposite
• Nonstandard negative
• Retro refusal
• 'On second thought, forget it'
• Old-timey oath