adj. angry, acid, and sharp in delivering argumentative replies: bitter; mean-spirited; sharp in language or tone.
the GNU version of the Collaborative International Dictionary of English
adj. Acrid; corrosive.
adj. Caustic; bitter-tempered' sarcastic.
The Century Dictionary and Cyclopedia
Abounding in acrimony or acridness; acrid; corrosive.
Figuratively, severe; bitter; virulent; caustic; stinging: applied to language, temper, etc.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. 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."