Implacable
Vine's Expository Dictionary of NT Words [1]
lit. denotes "without a libation" (a, negative, sponde, "a libation"), i.e., "without a truce," as a libation accompanied the making of treaties and compacts; then, "one who cannot be persuaded to enter into a covenant," "implacable," 2—Timothy 3:3 (AV, "truce-breakers"). Some mss. have this word in Romans 1:31 .
King James Dictionary [2]
IMPLA'CABLE, a. L. implacabilis in and placabilis, from placo, to appease.
1. Not to be appeased that can not be pacified and rendered peaceable inexorable stubborn or constant in enmity as an implacable prince. 2. Not to be appeased or subdued as implacable anger implacable enmity, malice or revenge.
Webster's Dictionary [3]
(1): ( a.) Not placable; not to be appeased; incapable of being pacified; inexorable; as, an implacable prince.
(2): ( a.) Incapable of ebign relieved or assuaged; inextinguishable.
