Disillusion is the disappointment that you feel when you discover that something is not as good as you had expected or thought.
There is disillusion with established political parties.
对现有政党的幻想破灭。
disillusions , disillusioning , disillusioned
If a person or thing disillusions you, they make you realize that something is not as good as you thought.
I'd hate to be the one to disillusion him.
我不愿做打破他梦想的人。