Word Study
implacable
CIDE DICTIONARY
implacable, a. [L. implacabilis; pref. im- not + placabilis: cf. F. implacable. See Placable.].
- Not placable; not to be appeased; incapable of being pacified; inexorable; as, an implacable prince. [1913 Webster]"I see thou art implacable." [1913 Webster]"An object of implacable enmity." [1913 Webster]
- Incapable of being relieved or assuaged; inextinguishable. [1913 Webster]"O! how I burn with implacable fire." [1913 Webster]"Which wrought them pain
Implacable, and many a dolorous groan."
Syn. -- Unappeasable; inexorable; irreconcilable; unrelenting; relentless; unyielding.
OXFORD DICTIONARY
implacable, adj. that cannot be appeased; inexorable.
Derivative
implacability n. implacably adv.
Etymology
ME f. F implacable or L implacabilis (as IN-(1), PLACABLE)
THESAURUS
implacable
adamant, adamantine, avenging, cast-iron, cruel, dour, firm, flinty, grim, grudgeful, hard, hard-core, immovable, immutable, impliable, inelastic, inexorable, inflexible, intractable, intransigent, iron, irreconcilable, merciless, mortal, pitiless, punitive, punitory, rancorous, relentless, retaliatory, revanchist, revengeful, rigid, rigorous, rock-ribbed, ruthless, steely, stern, stiff, unaffected, unalterable, unappeasable, unbending, unchangeable, uncompassionate, uncompromising, unflinching, unforgiving, ungiving, unmoved, unrelenting, unsympathetic, unyielding, vengeful, vindicatory, vindictiveROGET THESAURUS
implacable
Hate
N hate, hatred, vials of hate, disaffection, disfavor, alienation, estrangement, coolness, enmity, animosity, umbrage, pique, grudge, dudgeon, spleen bitterness, bitterness of feeling, ill blood, bad blood, acrimony, malice, implacability, repugnance, misanthropy, demonophobia, gynephobia, negrophobia, odium, unpopularity, detestation, antipathy, object of hatred, object of execration, abomination, aversion, b=ete noire, enemy, bitter pill, source of annoyance, hating, abhorrent, averse from, set against, bitter, implacable, unloved, unbeloved, unlamented, undeplored, unmourned, uncared for, unendeared, un-valued, disliked, crossed in love, forsaken, rejected, lovelorn, jilted, obnoxious, hateful, odious, abominable, repulsive, offensive, shocking, disgusting, reprehensible, invidious, spiteful, malicious, insulting, irritating, provoking, at daggers drawn, not on speaking terms, at loggerheads, no love lost between.Revenge
N revenge, revengement, vengeance, avengement, avengeance, sweet revenge, vendetta, death feud, blood for blood retaliation, day of reckoning, rancor, vindictiveness, implacability, malevolence, ruthlessness, avenger, vindicator, Nemesis, Eumenides, revengeful, vengeful, vindictive, rancorous, pitiless, ruthless, rigorous, avenging, unforgiving, unrelenting, inexorable, stony-hearted, implacable, relentless, remorseless, aeternum servans sub pectore vulnus, rankling, immitigable, manet ciratrix, manet alid mente repostum, dies irae dies illa, in high vengeance there is noble scorn, inhumanum verbum est ultio, malevolus animus abditos dentes habet, now infidel I have thee on the hip.For further exploring for "implacable" in Webster Dictionary Online