malcontent

adjective

1. not satisfied or content with currently prevailing conditions or circumstances.
2. dissatisfied with the existing government, administration, system, etc.

noun

3. a malcontent person, especially one who is chronically discontented or dissatisfied.

adjective

1. disgusted or discontented

noun

2. a person who is malcontent

1580s, noun and adjective, from French malcontent; see mal- + content (adj.). Related: Malcontented; malcontentedly; malcontentedness.