Related Clues:

• 'Ain't happening'
• ''I don't wanna''
• "Never mind"
• Yup's antonym
• "No chance!"
• 'Nope ...'
• Grunting negative
• 'Prolly not'
• Opposite of "yup"
• "Not in this lifetime!"
• 'Not gonna happen'
• Casual "I'll pass"
• "Um, no thanks"
• Opposite of 49-Across
• "Not in a million years!"