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).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.