disgruntled

Synonyms and related words:

against, annoyed, bad-tempered, beefing, bellyaching, bitching, browned off, complaining, complaintful, con, crabbing, crabby, cranky, croaking, cross, disappointed, disapprobatory, disapproving, discontent, discontented, disenchanted, disillusioned, displeased, dissatisfied, dissenting, envious, exasperated, faultfinding, fed up, griping, grouchy, grousing, growling, grumbling, grumpy, ill-humored, ill-tempered, indignant, irritated, low, malcontent, malcontented, moody, murmuring, muttering, opposed, opposing, out of humor, peeved, peevish, petulant, poor, put out, querulant, querulous, rebellious, resentful, restive, restless, sulky, sullen, testy, turned-off, unaccepting, unaccommodating, unappreciative, unapproving, uncomplimentary, uneasy, unfavorable, unfulfilled, ungratified, unhappy, unsatisfied, vexed, whiny