Definition of caustic adjective from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈkɔːstɪk//
    ; NAmE NAmE//ˈkɔːstɪk//
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  1. 1(of a chemical substance) able to destroy or dissolve other substances synonym corrosive a caustic cleaning product caustic liquid which blisters the skin
  2. 2critical in a bitter or sarcastic way synonym scathing caustic comments/wit Her speech was a caustic attack on government officials.
  3. Word Originlate Middle English: via Latin from Greek kaustikos, from kaustos ‘combustible’, from kaiein ‘to burn’.Extra examples a highly caustic chemical Lisa ignored the caustic comment. She was frantically trying to think up some caustic reply.
See the Oxford Advanced American Dictionary entry: caustic

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