An example of caustic is the effect mustard gas has on the skin.
An example of caustic is a boyfriend who is emotionally abusive to his girlfriend.
A caustic TV commentator.
Other Word Forms
Origin of caustic
- Middle English caustik from Latin causticus from Greek kaustikos from kaustos from kaiein kau- to burn
From American Heritage Dictionary of the English Language, 5th Edition
- From the Greek καυστός (kaustos, “burnt”), via the Latin causticus (“burning”).