Related Clues:

• Part 2 of today's quote
• Alternative for now
• ''Nothin' doin' ''
• "Not happening!"
• 'Not a chance!'
• "Fuggedaboutit!"
• 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''
• Under no circumstances
• "Not gonna happen!"
• 'No siree!'
• 'Nah'
• At no time whatever
• Word heard before and after "say"
• That's more what you'd expect to be 6 across by a raven