adj. 25B6; noun a group of malcontents : TROUBLEMAKER, mischief-maker, agitator, dissident, rebel; discontent, complainer, grumbler, moaner; informal stirrer, whinger, grouch, bellyacher; N. Amer. informal kvetch.
25B6; adjective a malcontent employee : DISAFFECTED, discontented, dissatisfied, disgruntled, unhappy, annoyed, irritated, displeased, resentful; rebellious, dissentient, troublemaking, grumbling, complaining; informal browned off, hacked off, fed up, peeved, bellyaching; Brit. informal cheesed off, brassed off; N. Amer. informal teed off, ticked off.
happy.