vit·ri·ol
noun/ˈvɪtriəl/
/ˈvɪtriəl/
[uncountable] (formal)- very cruel and bitter comments or criticism
尖刻无情的话（或批评） Word Originlate Middle English (denoting the sulphate of various metals): from Old French, or from medieval Latin vitriolum, from Latin vitrum ‘glass’.