acerbity, acid, acidity, acidulousness, acrimony, animosity, animus, antagonism, antipathy, asperity, bad blood, bad feeling, bile, bitter feeling, bitter resentment, bitterness, bitterness of spirit, causticity, choler, enmity, feud, gall, gnashing of teeth, grudgefulness, hard feelings, hate, hatred, heartburning, hostility, ill blood, ill feeling, ill will, implacability, implacableness, irreconcilableness, malevolence, malice, malignity, rankling, resentfulness, resentment, revengefulness, slow burn, soreness, sourness, spite, spleen, unappeasableness, vendetta, vengefulness, venom, venomousness, vindictiveness, virulence, vitriol
enmity, hostility, unfriendliness, discord, bitterness, rancor
, alienation, estrangement, dislike, hate, heartburning, animosity, malevolence, inimical, unfriendly, hostile, at enmity, at variance, at daggers drawn, at open war with, up in arms against, in bad odor with, on bad terms, not on speaking terms, cool, cold, cold hearted, estranged, alienated, disaffected, irreconcilable.
malevolence, bad intent, bad intention, unkindness, diskindness, ill nature, ill will, ill blood, bad blood, enmity, hate, malignity, malice, malice prepense, maliciousness, spite, despite, resentment, uncharitableness, incompassionateness, gall, venom, rancor
, rankling, virulence, mordacity, acerbity churlishness, hardness of heart, heart of stone, obduracy, cruelty, cruelness, brutality, savagery, ferity, ferocity, barbarity, inhumanity, immanity, truculence, ruffianism, evil eye, cloven foot, torture, vivisection, ill turn, bad turn, affront, outrage, atrocity, ill usage, intolerance, persecution, tender mercies, unkindest cut of all, malevolent, unbenevolent, unbenign, ill-disposed, ill-intentioned, ill-natured, ill-conditioned, ill-contrived, evil-minded, evil- disposed, black-browed, malicious, malign, malignant, rancorous, despiteful, spiteful, mordacious, caustic, bitter, envenomed, acrimonious, virulent, unamiable, uncharitable, maleficent, venomous, grinding, galling, harsh, disobliging, unkind, unfriendly, ungracious, inofficious, invidious, uncandid, churlish, surly, sullen, cold, cold-blooded, cold-hearted, black-hearted, hard-hearted, flint-hearted, marble-hearted, stony-hearted, hard of heart, unnatural, ruthless, relentless, cruel, brutal, brutish, savage, savage as a bear, savage as a tiger, ferine, ferocious, inhuman, barbarous, barbaric, semibarbaric, fell, untamed, tameless, truculent, incendiary, bloodthirsty, atrocious, bloodyminded, fiendish, fiendlike, demoniacal, diabolic, diabolical, devilish, infernal, hellish, Satanic, Tartaran, malevolently, with bad intent, cruel as death, hard unkindness' alter'd eye, homo homini lupus, mala mens, malus animus, rich gifts wax poor when givers prove unkind, sharp-tooth'd unkindness.
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.