Thersites, annotator, backbiter, belittler, calumniator, captious critic, carper, caustic critic, caviler, censor, censurer, cognoscente, commentator, commenter, connoisseur, critic, criticaster, criticizer, critickin, criticule, cynic, debunker, decrier, defamer, deflater, depreciator, derogator, detractor, disparager, editor, faultfinder, hatchet man, knocker, libeler, literary critic, man of letters, mudslinger, railer, reviewer, scholiast, slanderer, smellfungus, social critic, textual critic, traducer