disappoint verb definition in Disappointment topic from the Oxford Advanced Learner's Dictionary

disappoint

 verb: Disappointment topic
1 [transitive, intransitive] disappoint (somebody) | (it disappoints somebody that…) to make somebody feel sad because something that they hope for or expect to happen does not happen or is not as good as they hoped Her decision to cancel the concert is bound to disappoint her fans. I hate to disappoint you, but I'm just not interested. The movie had disappointed her (= it wasn't as good as she had expected). His latest novel does not disappoint.2 [transitive] disappoint something to prevent something that somebody hopes for from becoming a reality The new government had soon disappointed the hopes of many of its supporters.