Related Clues:

• "Who ___ you kidding?"
• "__ you serious?"
• '___ a chance'
• Able leader?
• ''We __ not amused!''
• Negation indication
• ''___ you serious?''
• ''The odds __ . . .''
• Amount to
• Word in some of the Ten Commandments
• Part of the verb to be
• "We __ not alone"
• ''___ you for real?''
• 'All bets ___ off'
• 'This suit is ___ black...' (line from 'Borat')