Acrimonious is used when someone's words or actions show deep resentment. He left the meeting with an acrimonious remark.
Pro Tip 2/3
Strong Conflict
Use 'acrimonious' when two people or groups are involved in a serious disagreement. An acrimonious debate preceded the controversial vote.
Pro Tip 3/3
Intensity Matters
'Acrimonious' implies a higher level of bitter hostility, more than just a regular argument. The acrimonious rivalry between the two teams was well-known.