implacable


implacable

adjective

Definition of IMPLACABLE

1
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>
2
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>

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