Source : Webster's Revised Unabridged Dictionary (1913)

Appeasement \Ap*pease"ment\, n.
   The act of appeasing, or the state of being appeased;
   pacification. --Hayward.

Source : WordNet®

appeasement
     n : the act of appeasing (as by acceding to the demonds of)
         [syn: {calming}]