General Synonyms:
* Satisfy: To fulfill a need or desire.
* Soothe: To calm or relieve.
* Pacify: To make peaceful or calm.
* Placate: To make someone less angry or hostile.
* Mollify: To soften someone's anger or resentment.
* Conciliate: To win someone over by being friendly or agreeable.
* Propitiate: To make someone favorable by offering something pleasing.
More Specific Synonyms:
* Assuage: To make a strong feeling less intense (like pain, anger, or grief).
* Allay: To reduce fear or anxiety.
* Concede: To admit defeat or surrender.
* Compromise: To reach an agreement by making concessions.
* Yield: To give way to pressure or demands.
Informal Synonyms:
* Smooth over: To make things seem less problematic.
* Butter up: To try to gain favor by flattery.
* Sweet-talk: To persuade someone with charm or flattery.
The best synonym will depend on the specific context and the desired nuance.