To disillusion someone is to make them see that a thing they believed was true or good is not. You take the pretty picture away. A child who thought every hero was kind may be disillusioned by a real story; a voter may be disillusioned by a leader who does not keep promises.

To disillusion someoneTo disillusion 某人，is to make them see就是讓他們看清楚，that a thing they believed was true or good is not一件他們原本相信是真的或是好的事，其實並不是。You take the pretty picture away你把那幅美好的畫面拿走了。A child who thought every hero was kind一個以為每個英雄都很善良的小孩 may be disillusioned by a real story可能會被一個真實的故事 disillusioned；a voter一個選民 may be disillusioned by a leader who does not keep promises也可能會被一個不守承諾的領袖 disillusioned。

It is stronger and colder than disappoint. Disappoint is “I hoped for a gift and did not get it.” Disillusion is “I thought this person, this job, this country was a certain way — and I found out I was wrong.” The verb is the usual learner use: The film disillusioned her.

It is stronger and colder than disappoint這個詞比 disappoint 更強烈、也更冷。Disappoint is "I hoped for a gift and did not get it."Disappoint 是「我原本希望有禮物，結果沒拿到」。Disillusion is "I thought this person, this job, this country was a certain way — and I found out I was wrong."Disillusion 是「我原以為這個人、這份工作、這個國家是某個樣子——結果發現我想錯了」。The verb is the usual learner use動詞是學習者比較常用的形式：The film disillusioned herThe film disillusioned her（這部電影讓她幻滅了）。

The same spelling is also a noun, a little more formal, for that loss of belief itself: a growing disillusion with politics. Teachers still prefer disillusionment for the noun, but you will meet both. You disillusion a person; you do not usually disillusion a plan.

The same spelling is also a noun, a little more formal同樣這個拼法也可以當名詞用，比較正式一點，for that loss of belief itself指的是那種失去信念本身：a growing disillusion with politicsa growing disillusion with politics（對政治日漸幻滅）。Teachers still prefer disillusionment for the noun老師還是比較偏好用 disillusionment 當名詞，but you will meet both但你兩種都會遇到。You disillusion a person你 disillusion 的是一個人；you do not usually disillusion a plan通常不會 disillusion 一個計畫。