Akademik

grumbler
noun
a person given to excessive complaints and crying and whining
Syn:
whiner, ↑complainer, ↑moaner, ↑sniveller, ↑crybaby, ↑bellyacher, ↑squawker
Derivationally related forms:
squawk (for: ↑squawker), ↑grumble, ↑bellyache (for: ↑bellyacher), ↑snivel (for: ↑sniveller), ↑moan (for: ↑moaner), ↑complain (for: ↑complainer), ↑whine (for: ↑whiner)
Hypernyms: ↑unpleasant person, ↑disagreeable person
Hyponyms: ↑kvetch

Useful english dictionary. 2012.