- 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) Excessive confidence or boldness; rashness in the face of danger or opposition without regard for consequences.
The junior analyst had the temerity to challenge the CEO’s projections in front of the entire board — and was proven right six months later.
Temerity derives from the Latin temeritas, meaning “rashness” or “blind chance,” rooted in temere — “rashly” or “by chance” — suggesting action taken without looking, in the dark, without regard for what might be coming. It entered English in the 15th century carrying its full Latin sense of dangerous, heedless boldness — the kind that mistakes the absence of fear for the presence of wisdom.