English to English

noun (n)

• a rough and bitter manner(noun.attribute)

  Synonym:
  acerbity, bitterness, jaundice, tartness, thorniness
  

  source: wordnet30
• A quality of bodies which corrodes or destroys others; also, a harsh or biting sharpness; as, the acrimony of the juices of certain plants.(noun)

  source: webster1913