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
Find another word for mutterer. In this page you can discover 17 synonyms, antonyms, idiomatic expressions, and related words for mutterer, like: complainer, crab, faultfinder, grouch, growler, grumbler, grump, murmurer, whiner, crank and griper.