complainer Synonyms

grumbler squawker crybaby bellyacher sniveller whiner moaner quibbler scolder slanderer faultfinder muckraker party pooper killjoy sniveler grouch sorehead mud-slinger sourpuss sidewalk superintendent panner nit-picker fusser doomsdayer squeaky wheel belittler nitpicker naysayer nagger dampener grump blubberer protester objector mutterer curmudgeon crosspatch croaker critic crier crank crab complainant censurer censor caviller caviler carper bawler defamer