Synonyms of 'disillusion'
Copyright © 2016 by HarperCollins Publishers. All rights reserved.
If you disabuse someone of something, you tell them or persuade them that what they believe is in fact untrue.
I did not disabuse them of this notion
They expressed their disappointment at what had happened.
Video: pronunciation of 'disillusion'
Thesaurus for disillusion from the Collins English Thesaurus
If a person or thing disillusions you, they make you realize that something is not as good as you thought.