acrimonious

• Meaning  -  stinging; caustic; bitter in words or manner; N. acrimony: bitter ill-natured animosity in speech or behavior

• Synonyms -  acerbic, caustic, bitter, peevish, pungent, tart, sharp.

• Antonyms -  kind, sweet, affable, benign.

• Usage -  Remain calm in acrimonious situation.

• Remember -  acri + moni + ous ~ a crore money; excess of money, which can make someone bitter, harsh