appease, mollify, pacify, soothe, calm, propitiate, conciliate, win over
calm - soothe - appease - placate - mollify - quieten - still - tranquilize - assuage - ease
To pacify means to calm a person, group, or situation that is upset, angry, or agitated, so that tension and conflict are reduced or disappear. It can involve soothing someone with kind words, explanations, or concessions, or taking practical steps that remove the cause of irritation or fear. The term is used both in personal contexts, such as calming a crying child or an angry friend, and in larger contexts, like easing social unrest or reducing hostility between groups or nations. The main idea is bringing peace, quiet, or emotional balance where there was disturbance or turmoil before.