The state of being disgruntled, usually displayed in a stereotypical form such as frowning and annoyance; the acts of sulky dissatisfaction.
2008, Katherine L. Herbig, Changes in Espionage by Americans: 1947-2007, The third most common motive for Americans to commit espionage is disgruntlement, usually caused by the person's relationships or treatment in the workplace, and the associated desire to take revenge.
