ROGET THESAURUS
caviler
Detractor
N
detractor, reprover, censor, censurer, cynic, critic,
caviler, carper, word-catcher, frondeur, barracker, defamer, backbiter, slanderer, Sir Benjamin Backbite, lampooner, satirist, traducer, libeler, calumniator, dawplucker, Thersites, Zoilus, good-natured friend, reviler, vituperator, castigator, shrew, muckraker, disapprover, laudator temporis acti, black-mouthed, abusive.