A crab is defined as someone who complains.
A person given to finding fault; chronic, captious complainer
One, such as a dog, that growls.
A twist or turn of the mind; caprice; whim; crotchet; also, a fit of temper or passion.
(Informal) A person who is angry, resentful, vindictive, etc., or one easily made so
(Slang) A person who has a gloomy or disagreeable expression or nature
A person who habitually complains or grumbles
A person who cries or complains frequently with little cause.
Find another word for grumbler. In this page you can discover 20 synonyms, antonyms, idiomatic expressions, and related words for grumbler, like: complainer, crab, faultfinder, growler, grump, murmurer, mutterer, crank, griper, grouser and bellyacher.