Synonyms:
- 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