disillusioned
adj ~ (with sb/sth) disappointed in sb/sth that one had admired or believed in (對某人[某事物])大失所望, 幻想破滅
Disillusioned voters want an alternative to the two main parties. 失望的選民需要一個黨派以取代這兩個大黨.
She's disillusioned with life in general. 她對生活各方面均不抱幻想了.