caustic
adjective
°Capable of burning, corroding or destroying organic tissue.
°(of language etc) sharp, bitter, cutting, biting, sarcastic.
noun
°Any substance or means which, applied to animal or other organic tissue, burns, corrodes, or destroys it by chemical action; an escharotic.
°(optics computer graphics) The envelope of reflected or refracted rays of light for a given surface or object.
synonyms: acidic, biting, burning, corrosive more» , searing, bitchy, catty, mordacious, nasty, sharp, spiteful