- Today's Word
Caustic
KAW-stik
Definition
- (adjective) Capable of burning, corroding, or destroying organic tissue.
- Harshly critical or sarcastic.
Example
His caustic wit often left people unsure whether to laugh or take offense.
Fun Fact
The word “caustic” originally comes from the Greek kaustikos, meaning “burning.” While it first described substances that physically burned, it later extended to describe sharp, biting remarks that metaphorically “burn” through conversation. Some of history’s most famous figures, including Winston Churchill and Dorothy Parker, were known for their caustic humor.
(noun) The range of one’s knowledge, understanding, or awareness.
Quantum physics lies far beyond my ken, no matter how many articles I read.
Ken comes from Old English cennan, meaning “to know” or “to make known,” and is closely related to Middle English and Scots usage where it meant knowledge, perception, or recognition. Over time, the word narrowed to describe the limits of what someone knows or understands, which is why it’s often used today in phrases like “beyond my ken.”