Synonyms for Malcontent:

adj.

discontent (adjective)
disquieted, fed up, joyless, uneasy, disgruntled, bored, dissident, sour, gloomy, exasperated, despondent, anxious, miserable, anguished, non-satisfied, cheerless, ticked off, restless, irritated, teed off, uncomfortable, frustrated, disapproving, displeased, irreconcilable, dissatisfied, wretched, discomposed, cross, unhappy, ungratified, discontent.
disobedient (adjective)
unruly.
dissatisfied (adjective)
disgruntled, unhappy, discontented.

n.

purist, scourge, GRINCH, shrew, perfectionist, critic, stickler, hothead, wet blanket, diva. malcontent (noun)
discontent, ill-affected, rebellious, discontented, disaffected.
wet blanket (noun)
GRINCH.

Other synonyms:

Other relevant words:
wet blanket, discontented, disaffected, rebellious, unruly, ill-affected.

Usage examples for malcontent

  1. At the master's voice- at the flash of the master's eye- the little knot of work- people drew back, and the malcontent whoever he was, shrunk into silence. – John Halifax, Gentleman by Dinah Maria Mulock Craik
  2. This, they said, had alone made them malcontent – Project Gutenberg History of The Netherlands, 1555-1623, Complete by John Lothrop Motley
  3. The Portuguese were still more malcontent than the Spaniards. – Project Gutenberg History of The Netherlands, 1555-1623, Complete by John Lothrop Motley