Related Clues:

• Word in a conditional statement, perhaps
• Menacing words
• Unfinished threat
• Word in a conditional statement
• 'What ___?' (clerk's question)
• Ultimate words in an ultimatum
• "If all --- fails...'
• Bully's threat
• ''Anyone ___?''
• Words suggesting serious consequences
• "What __ is new?"
• 'If all -- fails ...'
• ''What,'' ''who,'' ''how,'' and ''where''
• "Do it ___!"
• If that doesn't work