Negotiation roadblock

• Negotiator's outrageous demand, e.g
• Issue that halts negotiations
• Negotiator's outrageous demand, e.g.
• Negotiations killer ... or, in a way, what each answer to a starred clue is
• Fatal relationship problem
• Accord halter
• Negotiation obstacle
• Non-negotiable issue

Wiktionary Word definitions in Wiktionary
n. (alternative spelling of deal breaker English)