vitriolic       
adjective uk/ˌvɪt.riˈɒl.ɪk/ us/ˌvɪt.riˈɑː.lɪk/
 刻薄的;尖刻的
full of violent hate and anger 
  He launched a vitriolic attack on the prime minister, accusing him of shielding corrupt friends. 他对首相发起了尖锐的攻击,指责他包庇其腐败同僚。 
 He does not deserve the vitriolic criticism he has received. 他不应受到如此尖刻的批评。 
 See: vitriol
 - More examples
 - After he left her, she wrote a series of vitriolic emails to him.
 - He's never vitriolic. He never makes personal attacks.
 - The campaign has become increasingly vitriolic in the past few days.