Caustically

Part of speech: adverb

Definitions

1. In a manner characterized by intense sarcasm or criticism, exhibiting a biting tone that causes a sharp reaction or offense
2. With a voice that conveys scathing remarks and piercing observation, often leaving a corrosive impact on the target
3. In a way that uses harsh and cutting remarks to criticize or mock someone

Etymology: Caustically is a fairly transparent formation: it is the adverb of "caustic" with the suffix "-ally" attached. That suffix descends from Old English "-līce," a native English ending that was used to turn adjectives into adverbs, so the word is a plain English construction built on a borrowed base. The "-ally" form took shape in Middle English as "-ly" was reshaped by the "-al" of the adjective it followed. The adjective behind it, "caustic," goes back to Greek "kaustikos," from "kaiein," meaning "to burn." That sense of burning is the root of the modern meaning: a caustic substance corrodes what it touches, and a caustic remark is one that seems to eat away at its target in the same way. The literal and figurative senses have stayed close together for centuries, which is why an adverb describing scathing speech still carries the idea of something corrosive.

Synonyms: sarcastically, scathingly, bitterly

Antonyms: gently, kindly