Similar word to backcap:

acknowledgment, antiphon, back talk, backcap, band-aid, close, comeback, comment, cooler, counterclaim, crack, defense, disclosure, echo, elucidation, explanation, feedback, guff, interpretation, justification, key, lip, observation, parting shot, pay dirt, plea, quick fix, rebuttal, refutation, rejoinder, remark, repartee, report, resolution, response, result, retort, return, rhetorical question, riposte, sign, solution, statement, thank-you note, the ticket, topper, vindication, wisecrack