The five common negotiation styles, largely based on the Thomas-Kilmann Conflict Mode Instrument, are Competing, Collaborating, Compromising, Accommodating, and Avoiding. Competing is an "I win, you lose" approach where one party pursues their own concerns at the other's expense. Collaborating seeks a "win-win" outcome, investing time to find creative solutions that satisfy both parties' needs fully. Compromising is the middle ground, where both parties give up something to reach a quick, "win-some, lose-some" agreement. Accommodating is the opposite of competing; a person neglects their own concerns to satisfy the other person, often to preserve a relationship. Finally, Avoiding is a passive style where a person sidesteps the conflict entirely, which can be useful for trivial issues but often leaves problems unresolved. Most skilled negotiators do not rely on a single style but instead adapt their approach based on the importance of the relationship and the stakes of the specific deal.