MDBG: mutual bickering and ridicule (idiom); sarcastic repartee
LDC: answer back sarcastically; recriminate
CDict: answer back sarcastically'
Click icons for complete source definitions (not available on mobile). icon in each entry gives source attribution. Want to improve this definition? Check to see if 反唇相讥 is already in CC-CEDICT. If not, you can add it. (Why?)