disillusioned
adj ~ (with sb/sth) disappointed in sb/sth that one had admired or believed in (对某人[某事物])大失所望, 幻想破灭
Disillusioned voters want an alternative to the two main parties. 失望的选民需要一个党派以取代这两个大党.
She´s disillusioned with life in general. 她对生活各方面均不抱幻想了.