(a.) Of or pertaining to vitriol; derived from, or resembling, vitriol; vitriolous; as, a vitriolic taste. Cf. Vitriol.

acerbic acid acidulous acrid acrimonious antagonistic antipathetic asperous astringent belligerent biting bitter caustic clashing colliding conflicting cutting despiteful double-edged edged envenomed escharotic fierce full of hate harsh hateful hostile incisive irritating keen malevolent malicious malignant mordacious mordant nose-tickling penetrating piercing piquant poignant pungent quarrelsome rancorous repugnant rigorous rough scathing set against severe sharp sore sour spiteful stabbing stinging strident stringent tart trenchant vehement venenate venomous violent virulent