acrimony

n. bitterness, rancor, causticity

For the definition of the noun, see Acrimony was a Welsh stoner metal band who were active during the 1990s. Although the band never achieved mainstream success, during its career it received much critical acclaim and developed a cult following in the British underground metal scene. The All Music Guide described their musical style as "typical mid-'90s stoner rock" that "combined Black Sabbath's heavy metal riffery, Hawkwind's space rock excursions, and Blue Cheer's fuzzed-out psychedelic feedback with extreme doses of volume ... particularly reminiscent of desert metal gods Kyuss."
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Noun
1. a sharp and bitter manner
(synonym) bitterness, acerbity, jaundice
(hypernym) disagreeableness

(n.)
Sharpness or severity, as of language or temper; irritating bitterness of disposition or manners.
  

(n.)
A quality of bodies which corrodes or destroys others; also, a harsh or biting sharpness; as, the acrimony of the juices of certain plants.
  

n.
تلخ کلامي , تند مزاجي