acrimony, animosity, animus, antagonism, antipathy, bad temper, bad will, bitter feeling, bitterness, blighting glance, clashing, collision, competition, conflict, contrariety, contrariness, cross-purposes, disaccord, dissension, enmity, evil disposition, evil eye, feud, fractiousness, friction, hard feelings, hostility, ill-disposedness, ill blood, ill feeling, ill nature, ill will, inimicalness, malevolence, malocchio, negativeness, noncooperation, obstinacy, oppugnancy, perverseness, rancor, recalcitrance, refractoriness, repugnance, rivalry, soreness, sourness, uncooperativeness, vendetta, venom, virulence, vitriol, vying, whammy