vitriol
noun
[ ˈvɪtrɪəl ]
• bitter criticism or malice.
• "her mother's sudden gush of fury and vitriol"
• sulphuric acid.
• "it was as if his words were spraying vitriol on her face"
Origin:
late Middle English (denoting the sulphate of various metals): from Old French, or from medieval Latin vitriolum, from Latin vitrum ‘glass’.
