Synonyms and related words :
acid, angry, beefing, bellyaching, bitching, caustic, cheerless, complaining, complaintful, corrosive, crabbing, crabby, cranky, croaking, disappointed, discontented, disgruntled, displeased, dissatisfied, envious, faultfinding, feeling evil, grim, griping, grouchy, grousing, growling, grumbling, humorless, in bad humor, infestive, joyless, malcontent, malcontented, mirthless, miserable, murmuring, muttering, out of sorts, out of temper, peevish, petulant, pleasureless, querulant, querulous, rebellious, resentful, restive, restless, sorry, sorryish, sulky, unaccepting, unaccommodating, uncheerful, uncheery, uneasy, unfulfilled, ungratified, unhappy, unjoyful, unmirthful, unsatisfied, unsmiling, whiny, wretched