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disillusion

disillusion /ˌdɪsəˈluːʒən/ verb
disillusions; disillusioned; disillusioning
disillusion
/ˌdɪsəˈluːʒən/
verb
disillusions; disillusioned; disillusioning
Britannica Dictionary definition of DISILLUSION
[+ object]
: to cause (someone) to stop believing that something is good, valuable, true, etc.

— disillusion

noun [noncount]

— disillusioning

adjective [more disillusioning; most disillusioning]

— disillusionment

/ˌdɪsəˈluːʒənmənt/ noun [noncount]