caustic
adjective uk/ˈkɔː.stɪk/ us/ˈkɑː.stɪk/
(CHEMICAL)
苛性的，腐蚀性的
A caustic chemical burns or destroys things, especially anything made of living cells.
a caustic substance 腐蚀性物质
(WORDS)
（话语或说话方式）刻薄的，尖刻的，挖苦的
A caustic remark or way of speaking is hurtful, critical, or intentionally unkind.
caustic comments 尖刻的评论
She's famous in the office for her caustic wit. 她说话刻薄机智，在办公室是出了名的。