caustically

/ˈkɔːstɪkli/
adverb
  1. In a way that is harsh, critical, or sarcastic.
    • The critic caustically described the movie as a waste of film.
    • She caustically remarked that his plan was doomed to fail.
    • He caustically replied, 'Oh, brilliant idea,' when she suggested the change.
Antonyms
What does "caustically" mean? | whatsthatwordmean | whatsthatwordmean