Synonyms of 'disenchant'
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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
If a person or thing disillusions you, they make you realize that something is not as good as you thought.
I hate to disillusion you, but he's already married.
Thesaurus for disenchant from the Collins English Thesaurus
to make disappointed or disillusioned