Related Clues:

• Ultimatum's ultimate word, usually
• "... or ___!"
• "What ___ can I say?"
• Threat words
• Threat ending
• 'Anything ___' (Woody Allen film)
• Part of a threat
• See 29-Down
• 'I'm not kidding here'
• In a different way
• Contrariwise
• Option word
• Threat ender
• Word after who, what or where
• Instead