disaffection

/ˌdɪsəˈfɛkʃən/
noun
  1. A feeling of dissatisfaction, resentment, or lack of loyalty, especially toward a person, group, or system that one was previously loyal to.
    • Many young people feel a sense of disaffection with the current education system.
    • The politician's broken promises caused widespread disaffection among his supporters.
    • Growing disaffection among factory workers led to a series of strikes.