/ ˌækrɪˈməʊniəs; NAmE -ˈmoʊ-/ adjective
( formal ) ( of an argument, etc. ) angry and full of strong bitter feelings and words
SYN bitter :
His parents went through an acrimonious divorce.
► acri·mo·ni·ous·ly adverb
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WORD ORIGIN
early 17th cent. (in the sense bitter, pungent ): from acrimony + -ous .