Synonyms of 'bad blood'

acrimony, animosity, animus, antagonism, antipathy, collision, competition, contrariety, disaccord, dissension, enmity, evil eye, feud, fractiousness, friction, hostility, ill feeling, ill will, inimicalness, noncooperation, obstinacy, perverseness, rancor, repugnance, rivalry, vendetta, venom, virulence, vitriol, vying