Angry, acid, and sharp in delivering argumentative replies: bitter; mean-spirited; sharp in language or tone.
Joey: Hey, if you wanna grab a bite before work we’d better get acrimonious.
Ross: Listen, if you don’t know what the word “acrimonious” means, just don’t use it.
– Friends (2003) Season 9, Episode 21; “The One with the Fertility Test” [No. 215]