1. Having lost one's previous false hopes or beliefs; disappointed
   "But if he had hoped that his bitter memories would be speedily dispelled, he was to be sharply disillusioned"

1. Cause someone to understand that something they previously believed is false or overly optimistic
   "The harsh realities of the job market disillusioned many new graduates";
   - disenchant

See also: disenchanted

Type of: disappoint, let down

Encyclopedia: Disillusioned