I. ˌdis-ə-ˈlü-zhən noun
Date: 1591
: the condition of being disenchanted
II. transitive verb
( dis·il·lu·sioned ; dis·il·lu·sion·ing -ˈlü-zhə-niŋ)
Date: 1855
: to free from illusion ; also : to cause to lose naive faith and trust
• dis·il·lu·sion·ment -ˈlü-zhən-mənt noun