a. [ Cf. LL. acrimonious, F. acrimonieux. ] 1. Acrid; corrosive; as, acrimonious gall. [ Archaic ] Harvey. [ 1913 Webster ]
2. Caustic; bitter-tempered' sarcastic; as, acrimonious dispute, language, temper. [ 1913 Webster ]
adv. In an acrimonious manner. [ 1913 Webster ]
n. The quality of being acrimonious; asperity; acrimony. [ 1913 Webster ]