This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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v. To allay the anger of, especially by making concessions; appease. See Synonyms at pacify.

v. To calm; to bring peace to; to influence someone who was furious to the point that he or she becomes content or at least no longer irate.

n. Same as placard, 4 & 5.

v. To appease; to pacify; to concilate.

To appease or pacify; conciliate.

v. cause to be more favorably inclined; gain the good will of

"COSSACK: Now, when you say "placate," give us a little more description."

enrage   

placated    placates    placating   

calm    tranquillise    calm down    quieten    lull    still    tranquillize    quiet    tranquilize   

placard   

placated    placating   

appease    pacify    concilate    satisfy    mollify   

vacate