- Disillusion is defined as disappointment that you feel when you realize something you thought was true wasn't, or when you realize that something you thought was good is not as good as you believed it was.
An example of disillusion is what you feel when you find out that Santa isn't real.
- To disillusion means to cause someone to realize that a belief or ideal they had was false.
An example of disillusion is when you tell a small child that Santa isn't real.
- to free from illusion or false ideas; disenchant
- to take away the ideals or idealism of and make disappointed, bitter, etc.
Used by arrangement with John Wiley & Sons, Inc.
transitive verb dis·il·lu·sioned, dis·il·lu·sion·ing, dis·il·lu·sions
- The act of disenchanting.
- The condition or fact of being disenchanted.
- disˌil·luˈsion·ment noun
- disˌil·luˈsive adjective