Definition of IMPLACABLE

sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion <an implacable judge who knew in his bones that the cover-up extended to the highest levels of government>
showing no signs of slackening or yielding in one's purpose <an implacable dedication to the proposition that everyone is entitled to a quality education>

March 27, 2015
quiescent Hear it
Tranquilly at rest or causing no trouble
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