disapproval If you refer to what someone says or writes as vitriol, you disapprove of it because it is full of bitterness and hate, and so causes a lot of distress and pain. The vitriol he hurled at members of the press knew no bounds = acrimony, venom
(H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry subject to bitter verbal abuse expose to the effects of vitriol or injure with vitriol
A blue, crystalline hydrous solution of copper sulfate, CuSOO, one of the most important industrial copper salts, used in insecticides, germicides, and hair dyes and in the processing of leather and textiles
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"
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