vitriolic

(s) 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
- a vitriolic critique
acid, blistering, caustic, acerb, acerbic, acrid, sulfurous, sulphurous, bitter, virulent,
(s) of a substance, especially a strong acid; capable of destroying or eating away by chemical action corrosive, caustic, erosive, mordant,

acid blistering caustic acerb acerbic acrid sulfurous sulphurous bitter virulent corrosive erosive mordant

vitriolically