adjective.angry, acid, and sharp in delivering argumentative replies: bitter; mean-spirited; sharp in language or tone.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
marked by strong resentment or cynicism
Word Usage
"Gross said he clearly recognized what he called the "acrimonious relationship" between McCourt and MLB Commissioner Bud Selig , but rejected Dodgers attorneys' argument that MLB would use the loan to gain control of the team and push McCourt aside."