riposte

(noun) a quick reply to a question or remark (especially a witty or critical one). Synonyms: rejoinder, retort, return, replication, comeback, counter. Example: "It brought a sharp rejoinder from the teacher."

(noun) (fencing) a counterattack made immediately after successfully parrying the opponents lunge.

(verb) make a return thrust. Example: "His opponent riposted."

(verb) answer back. Synonyms: retort, come back, repay, return, rejoin.