tr.v. ap·peased, ap·peas·ing, ap·peas·es
a. To placate or attempt to placate (a threatening nation, for example) by granting concessions, often at the expense of principle.
b. To calm, soothe, or quiet (someone): appeased the baby with a pacifier. See Synonyms at pacify.
2. To satisfy, relieve, or assuage: appease one's thirst.
[Middle English appesen, from Old French apesier : a-, to (from Latin ad-; see AD-) + pais, peace (from Latin pāx; see pag- in the Appendix of Indo-European roots).]
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