acrimonious

/ˌækrɪˈmoʊniəs/
adjective
  1. Angry and bitter in tone or manner; full of harsh words or strong disagreement.
    • Their divorce was acrimonious, with both sides refusing to speak to each other.
    • The meeting ended in an acrimonious argument about the budget.
    • The debate became acrimonious when personal insults were exchanged.
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