Related Clues:

• Alternative for now
• "Not happening!"
• Defensive statement
• Reply to 'Aww, Mom, ple-e-ease?'
• 'Not a chance!'
• "Ain't happening!"
• Reply to a pushy person
• 'Stop! You've got it all wrong!'
• 1998 Destiny's Child hit
• With 39-Across and 49-Across, rule broken by the three theme entries' first and last two letters
• Word seen on both sides of ''say''
• Redundant denial
• "Me? Never!"
• 'That can't be true!'
• Under no circumstances