Definition of vitriol noun from the Oxford Advanced American Dictionary

 

vitriol

 noun
noun
NAmE//ˈvɪtriəl//
 
, NAmE//ˈvɪtriˌɔl//
 
[uncountable](formal)
 
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very cruel and bitter comments or criticism synonym abuse
See the Oxford Advanced Learner's Dictionary entry: vitriol