Definition of vitriolic adjective from the Oxford Advanced Learner's Dictionary

 

vitriolic

 adjective
adjective
BrE BrE//ˌvɪtriˈɒlɪk//
 
; NAmE NAmE//ˌvɪtriˈɑːlɪk//
 
(formal)
 
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(of language or comments) full of anger and hatred synonym bitter The newspaper launched a vitriolic attack on the president. She was vitriolic about Gordon.
See the Oxford Advanced American Dictionary entry: vitriolic