Malcontent1. (n.) One who is discontented or dissatisfied with the current conditions; especially, dissatisfied with the government.
2. (n.) One who discontented; especially, a discontented subject of a government; one who express his discontent by words or overt acts.
Thesaurus Entries
agitator, alienated, anarch, anarchist, beefing, bellyacher, bellyaching, bitching, brawler, complainant, complainer, complaining, complaintful, contumacious, crab, crabbing, crabby, crank, cranky, croaker, croaking, disaffected, disappointed, discontent, discontented, disgruntled, disobedient, displeased, dissatisfied, envious, estranged, extremist, factious, faultfinder, faultfinding, frondeur, griever, griper, griping, grouch, grouchy, grouser, grousing, growler, growling, grumbler, grumbling, insubordinate, insurgent, insurrectionary, insurrectionist, insurrecto, kicker, killjoy, kvetch, lamenter, malcontented, maverick, mourner, murmurer, murmuring, mutineer, mutterer, muttering, nonconformist, out of humor, peevish, petulant, querulant, querulous, querulous person, reactionary, reactionist, rebel, rebellious, resentful, restive, restless, revolter, revolutionary, revolutionist, rioter, seditious, sorehead, sourpuss, spoilsport, subversive, sulky, traitor, unaccepting, unaccommodating, uneasy, unfulfilled, ungovernable, ungratified, unhappy, unruly, unsatisfied, wet blanket, whiner, whiny