Which word describes a sharp, biting wit or tone; a remark that is corrosive?

• A. Caustic
• B. Callous
• C. Benevolent
• D. Approbation

Answer: (A)

A word that captures a sharp, biting wit or tone and a sense of corrosive remark is caustic. Caustic behavior or language burns ideas or people with a cutting edge, often through sarcastic wit that aims to pierce pretenses or hypocrisy. It conveys harshness and a piercing, almost acidic quality in what’s said.

That’s why this term fits best. The other options don’t carry that same sense. Callous describes emotional coldness or indifference, not a knack for biting humor. Benevolent means kind and well-meaning, which is the opposite of a corrosive tone. Approbation refers to approval or praise, which is unrelated to the idea of sharp, injurious humor.

A caustic remark, then, is the right match for a wit or tone that feels corrosive and cutting.