Synonyms of slanderer

2 Syllables
nagger, censor, quibblers, blamers, quibbler, carper, fretter, nigglers, niggler, fretters, doubter, scolder, worrier, blamer, zapper, panner
3 Syllables
maligner, nitpicker, disputer, mudslinger, mudslingers, complainant, enemies, nit-picker, mud-slinger, caviler, complainer, enemy, defamer, muckraker, vilifier, reviler, asperser, faultfinder, aristarch, belittler, censurer, attacker
4 Syllables
criticizer, disparager, disapprover, hypercritic