Related Clues:

• Consequences introducer
• Menacing suggestion: loser beaten up with rifle butt
• Ending that threatens
• End of a bully's threat
• "Alternately ..."
• Otherwise making a threat?
• Last words of a threat
• Threat-ending phrase
• Common conclusion of a 31 Across
• Fear-inducing phrase
• Promise of dire consequences
• Words in a threat
• '... and if you don't, there will be consequences!'
• Blackmailer's conclusion
• Unspoken alternative