Meaning of implacable

im•plac•a•ble

Pronunciation: (im-plak'u-bul, -plā'ku-), [key]
— adj.
  1. not to be appeased, mollified, or pacified; inexorable: an implacable enemy.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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