disgruntlement

noun

1. (countable, uncountable)The state of being disgruntled, usually displayed in a stereotypical form such as frowning and annoyance; the acts of sulky dissatisfaction.

   “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.”

   “...J. D. Salinger managed to forge, in Holden Caulfield, the epitome of American adolescent disgruntlement for decades of young readers...”