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 (plăk′ə-bəl, plā′kə-)
Easily calmed or pacified; tolerant.

[Middle English, agreeable, from Old French, from Latin plācābilis, from plācāre, to calm; see plāk- in Indo-European roots.]

plac′a·bil′i·ty n.
plac′a·bly adv.
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 ?
I thought I was once more by the side of the Sphere, whose lustrous hue betokened that he had exchanged his wrath against me for perfect placability. We were moving together towards a bright but infinitesimally small Point, to which my Master directed my attention.
73r/ so but there are also evident by the light of Nature, so very many of his Attributes, and especially that great trinary of perfect and infinite Power, wisdom and goodness as also his purity, holiness, Justice, omniscience, placability, beneficence, (j) truth (k) which are but so many branches of his wisdom & goodness: And besides there is a secret Consciousness in every (l) Man that all the things (m) in Nature had their Being from his power, their preservation from his Providence, their benefit and good from his Beneficence: These Notions are evident to be in the Nature of Man, and by the Experience of all Nations, by the testimony of the Apostles, (a) Rom.
When she was mentioned herself, it was done with so much temper, that considering the catastrophe she had brought upon him, his moderation and placability [sic] surprised and touched her.