Related Clues:

• Opposite of "yup"
• 'Not gonna happen'
• Opposite of 49-Across
• "Not in a million years!"
• 'Yeah, like that'll ever happen'
• Opposite of "yep"
• "Sorry, can't"
• 'You're delusional!'
• 'Uh-unh'
• "Forget about it"
• "Nothing doing"
• "Not gonna happen!"
• 'You're mistaken'
• 'Sorry, dude'
• "Ain't happening"