ac ‧ ri ‧ mo ‧ ni ‧ ous /ˌækrəˈməʊniəs◂, ˌækrɪˈməʊniəs◂ $ -ˈmoʊ-/ BrE AmE adjective
an acrimonious meeting or discussion is one in which people argue a lot and get very angry SYN bitter :
The meeting ended in an acrimonious dispute.
—acrimoniously adverb
—acrimoniousness noun [uncountable]