Disillusionment is the disappointment that you feel when you discover that something is not as good as you had expected or thought.
例句
...his growing disillusionment with his work.他对他的工作越来越不抱幻想...the pain, disillusionment and despair we experience when someone we idolized has betrayed our trust.我们视作偶像的人辜负了我们的信任时,我们所体会到的痛苦、失望和绝望
英汉词典释义
n.
醒悟;理想破灭
causing widespread disillusionment among young people在年轻人中普遍引起失望There is growing public disillusionment with the present system of government.公众对于政府的现行体制越来越不抱幻想。This state of discontent and disillusionment created a real crisis for the Republic.怨声载道和理想破灭的现状给共和国造成了极为严重的危机。