Related Clues:

• "Sorry, that's impossible!"
• Opposite of yep
• 10-Across, informally
• 'Out of my capabilities'
• "Nope" kin
• "Above my pay grade" ... and, read in four parts, a hint to 16-, 24-, 32-, 40- and 49-Across
• 'Above my pay grade' ... and, read in four parts, a hint to 16-, 24-, 32-, 40- and 49-Across
• "Afraid that's impossible"
• ''Aw __, it would be so wrong'' (2013 country song lyric)
• 'Impossible for me!'
• 'The deal is off!'
• I am unable to get even mains in new condo
• Wish I could help by coming up with old forensic evidence on fleece
• 'Impossible for me'
• 'Not happening'