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 blood ill feeling ill nature ill will ill-disposedness inimicalness malevolence malocchio negativeness noncooperation obstinacy oppugnancy perverseness rancor recalcitrance refractoriness repugnance rivalry soreness sourness uncooperativeness vendetta venom virulence vitriol vying whammy