BATNA, which stands for "Best Alternative to a Negotiated Agreement," is a critical term used in negotiation. It refers to the idea that each party in a negotiation should have an alternative plan in case the negotiation fails to produce an agreement. Synonyms for BATNA include fallback position, alternative option, alternative strategy, contingency plan, or plan B. These terms describe a similar concept of having an alternative plan to turn to in case things don't work out as intended during negotiation. It is essential to have a BATNA to ensure that negotiators have a backup plan and are better prepared to negotiate effectively.