vitriolic. Mean, nasty, and caustic as the worst acid, vitriolic words can hurt feelings, break hearts, and even lead to violence. Vitriolic is an adjective related to the noun vitriol — which means a metal sulphate. ... You are more likely to hear vitriolic used to describe caustic words.
vitriolic - Dictionary Definition : Vocabulary.com
https://www.vocabulary.com/dictionary/vitriolic
Example....."Grow a pair"
vitriolic in American
(ˌvɪtriˈɑlɪk )
adjective
1.
of, like, or derived from a vitriol
2.
extremely biting or caustic; sharp and bitter
Example......." Prove I am wrong " in bolded form for emphasis is generally considered caustic/sharp when used as it is in this context.
Such use is frowned on by the moderators of this and most other forums.
Do I need to say more ?