acrimoniously

adjective

1. caustic, stinging, or bitter in nature, speech, behavior, etc.: an acrimonious answer; an acrimonious dispute.

adjective

1. characterized by bitterness or sharpness of manner, speech, temper, etc

adj.

1610s, “acrid,” from French acrimonieux, from Medieval Latin acrimoniosus, from Latin acrimonia (see acrimony). Of dispositions, debates, etc., from 1775. Related: Acrimoniously; acrimoniousness.