RichThesaurus
noncomplainer
noncomplainer
synonyms
noncomplainer
antonyms
squeaky wheel
quibbler
troublemaker
whiner
smellfungus
sourpuss
whinger
pick-fault
scolder
pettifogger
vituperator
bellyacher
hafter
grouch
carper
faultfinder
grumbler
criticizer
nitpicker
findfault
castigator
kvetcher
critic
censurer
complainer
crabber
caviler