vitriolic

adj

1. caustic, acrimonious, mordant, mordacious, bitter, acrid, acidulous, acid, pungent; trenchant, cutting, incisive, slashing, scathing; keen, pointed, sharp, sharp-tongued; penetrating, piercing, stinging, pricking, nipping, biting; astringent, severe, acerb, acerbic, stern, harsh, austere, stringent; spiteful, virulent, malicious, maleficent, venomous, vicious, malevolent,malignant; invidious, hateful.

2. sarcastic, sardonic, scornful, mocking, ridiculing, derisive, derisory, Rabelaisian; satirical, ironic, ironical, double-edged, edged, cynical; contemptuous, contumelious, disparaging, sneering, disdainful, supercilious, haughty, arrogant; taunting, teasing, chaffing, gibing, jeering, scoffing; critical, captious, censorious, carping, faultfinding, hypercritical.