1. in a harsh, bitter, or sarcastic manner

Examples

• She caustically remarked that his presentation was ‘truly inspiring’ after he forgot half his points.
• The critic caustically dismissed the film as ‘two hours of my life I’ll never get back.’
• He caustically observed that the meeting could have been an email.
• The teacher caustically noted that perhaps studying might improve their test scores.
• She smiled caustically when asked about her ex-husband’s new business venture.
• The comedian caustically mocked the politician’s latest promise.