harsh or corrosive in tone; "an acerbic tone piercing otherwise flowery prose"; "a barrage of acid comments"; "her acrid remarks make her many enemies"; "bitter words"; "blistering criticism"; "caustic jokes about political assassination, talk-show hosts and medical ethics"; "a sulfurous denunciation"
Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste
disapproval If you describe someone's language or behaviour as vitriolic, you disapprove of it because it is full of bitterness and hate, and so causes a lot of distress and pain. There was a vicious and vitriolic attack on him in one of the Sunday newspapers two weeks ago. = venomous. vitriolic language, writing etc is very cruel and angry towards someone