vitriol

(noun) (H2SO4) a highly corrosive acid made from sulfur dioxide; widely used in the chemical industry. Synonyms: oil of vitriol, sulfuric acid, sulphuric acid.

(noun) abusive or venomous language used to express blame or censure or bitter deep-seated ill will. Synonyms: vituperation, invective.

(verb) expose to the effects of vitriol or injure with vitriol.

(verb) subject to bitter verbal abuse.