1. a feeling of disappointment resulting from the discovery that something is not as good as one believed it to be

Examples

• Her disillusionment with politics began after the scandal broke.
• The young soldier experienced deep disillusionment after witnessing the brutality of war.
• Many voters expressed their disillusionment with the current administration.
• His disillusionment with corporate life led him to start his own business.
• The documentary revealed the widespread disillusionment among factory workers.
• After years of broken promises, public disillusionment reached an all-time high.