Synonyms of disillusion
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disabuseIf 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
enlightencorrectset rightopen the eyes ofset straightshatter (someone's) illusionsfree from errorundeceive
• They expressed their disappointment at what had happened.
disenchantto make disappointed or disillusioned
Thesaurus for disillusion from the Collins English Thesaurus