Wiktionary
acerbically
adv. 1 sourly; bitterly 2 In a sarcastic or cynical manner.
Usage examples of "acerbically".
Guess he’s graduated from killer Frisbees, she noted acerbically, recalling Seven’s description of the deadly chakrams Khan had employed in Moscow a few years back.
Rhyme said acerbically as Branch opened Rhyme's shirt and untaped the microphone and transmitter.