Synonyms of grumbler

nounA person who persistently grumbles; a complainer.

• bellyacherOne who bellyaches; a complainer.
• carperA person who habitually carps, who talks too much and regularly finds fault.
• castigatorOne who castigates.
• cavilerA person who cavils; a faultfinder, quibbler or nitpicker.
• censurerOne who censures.
• complainer
• crabberA person who finds fault or criticizes.
• critic
• criticizerA person who criticizes; a carper or faultfinder.
• faultfinderA person who finds fault.
• grouchOne who is grumpy or irritable.
• grumpA habitually grumpy or complaining person.
• grumpy pants
• kvetcherA person who kvetches; a complainer, kvetch.
• nitpickerOne who nitpicks (finds fault in unimportant details).
• pettifogger
• quibblerSomebody who quibbles.
• scolder
• smellfungusA faultfinder, complainer, grumbler.
• sourpussA person who is habitually gloomy, sullen or miserable; a grouch; a scowling person.
• squeaky wheel
• troublemakerA complainer.
• vituperatorOne who vituperates, or censures abusively.
• whinerOne who whines about perceived problems; a complainer.
• whinger
• whining WillySomeone who whines incessantly; a whiner.
• findfault obsoleteA faultfinder.
• hafter obsoleteA maker of handles for knives and other tools.
• latrant obsoleteOne who is barking, a dog, (figurative) a complainer.
• pick-fault obsoleteA critic; a censorious person.