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tr.v. pac·i·fied, pac·i·fy·ing, pac·i·fies
a. To ease the anger or agitation of (a person or the mind, for example).
b. To calm or soothe (a feeling, such as anger).
a. To end war, fighting, or violence in (a region or country), especially by military force.
b. To subdue or quell (an insurrection or conflict, for example).
c. To cause (a group) to end a rebellion or other violent action.

[Middle English pacifien, from Old French pacifier, from Latin pācificāre : pāx, pāc-, peace; see pag- in Indo-European roots + -ficāre, -fy.]

pac′i·fi′a·ble adj.
Synonyms: pacify, mollify, conciliate, appease, placate
These verbs refer to allaying another's anger, discontent, or agitation. To pacify is to ease the concerns of or restore calm to: "The explanation ... was merely an invention framed to pacify his guests" (Charlotte Brontë).
Mollify stresses the soothing of hostile feelings: The therapist mollified the angry teenager by speaking gently. Conciliate implies winning over, often by reasoning and with mutual concessions: "He recognized the need to conciliate his political opponents" (Robert W. Johannsen).
Appease and placate suggest satisfying claims or demands or tempering antagonism, often by granting concessions: I appeased my friend's anger with a compliment. A sincere apology placated the indignant customer.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
(The affair he had alluded to had happened a few days before- a fight between the prisoners and the French soldiers, in which Pierre had succeeded in pacifying his comrades.) Some of the prisoners who had heard Pierre talking to the corporal immediately asked what the Frenchman had said.
"I pray you," answered the minister, "if thou hast any means of pacifying the child, do it forthwith!
The letter in which Old Sharon had undertaken (by way of pacifying Isabel) to write the name of the thief, contained these lines:
Summary: Paris [France], Apr 27 (ANI): A fresh wave of the Yellow Vest protests hit France on Saturday, despite French President Emmanuel Macron's conference earlier this week where a string of proposals aimed at pacifying the protesters were introduced.
JAHANIAN -- Husband has shot injured his estranged wife on his failure in pacifying her.
MULTAN:Former prime minister Syed Yusuf Raza Gilani said the United States (US)can play a role in pacifying the ongoing tensions between Pakistan and India on Friday.Pakistan doesn't wish to go to war, as it is not the solution of Pak-India issues," he said while talking to reporters in Multan.
Rolando Debusura Siptimo, 49, a barangay tanod and Jojo Languita, a resident of Buluan, were pacifying several persons who were arguing passionately in a village hall disco at 2:30 a.m.
Meanwhile, Gomez said Jovita was also injured when the victim tried to stab her during a commotion and while pacifying his husband and not to get involved in the commotion.