Related Clues:

• 'I doubt it'
• "I doubt it"
• Permit half of 9 across
• 'Ain't happenin'!'
• Emulate a quarterback
• "Fuhgeddaboutit!"
• QBs do it sometimes
• 'Couldn't be'
• Informal dissent
• Option for Eli Manning
• Base on balls, in sports lingo
• 'Um, no thanks'
• Preceder (or follower) of a puff puff
• 'I'm out, brah'
• Joe Flacco might do it