Related Clues:

• "... or __!"
• ''If all __ fails. . .''
• ''Where'' attachment
• Ultimatum's ultimate word
• ''Ask somebody ___!''
• UK PM
• If another choice is needed
• It often follows something
• ''If all ___ fails, read the directions''
• ''Anything ___'' (Woody Allen film)
• 'Merry' month
• Programming command
• 'Or ___ what?'
• One who might be crest-fallen?
• ''What,'' ''who,'' ''how'' or ''where'' follower