Grumbler

n.

1.

One who grumbles.

Noun

1.

grumbler - a person given to excessive complaints and crying and whining Synonyms: moaner, sniveller, squawker, whiner, bellyacher, complainer, crybaby

bellyacher, complainant, complainer, crab, crank, croaker, crosspatch, faultfinder, frondeur, griper, grouch, grouser, growler, kicker, kvetch, malcontent, murmurer, mutterer, querulous person, reactionary, reactionist, rebel, sorehead, whiner