A sarcastic rebuke is a form of criticism that is delivered in a mocking or ironic manner. It is often used to express disapproval or disappointment in someone's actions or words. The crossword solution for the term 'SARCASTIC REBUKE' is SLAP, which is an appropriate term to describe this type of criticism. A SLAP is a physical gesture that can be used to express disapproval or anger, and it is often used as a metaphor for a verbal rebuke.