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   caustic

   /ˈkɔːstɪk/

   adjective

   • 1. able to burn or corrode organic tissue by chemical action: "a caustic cleaner" Similar corrosivecorrodingmordantacidalkalineburningstingingacridharshdestructive
   • 2. sarcastic in a scathing and bitter way: "the players were making caustic comments about the refereeing" Similar sarcasticcuttingbitingmordantstingingsharpbitterscathingderisivesardonicironicscornfultrenchantacerbicvitriolictartacidpungentacrimoniousastringentrapier-likerazor-edgedcriticalpolemicvirulentvenomouswaspishinformal:sarkyrare:mordaciousacidulousOpposite kind
   • 3. formed by the intersection of reflected or refracted parallel rays from a curved surface.

   noun

   • 1. a caustic substance.
   • 2. a caustic surface or curve.

   Word Origin late Middle English: via Latin from Greek kaustikos, from kaustos ‘combustible’, from kaiein ‘to burn’.

   Derivatives

   • 1. caustically adverb
   • 2. causticity noun

   Scrabble Points: 11

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