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Delude
Self-Deception
When 'delude oneself' is used, it indicates that a person is refusing to accept the truth about a situation or themselves. 
Negative Connotation
'Delude' often implies a sense of dishonesty or manipulation and is used in negative contexts. 
Intentional Deception
Use 'delude' to emphasize the intentional aspect of deceiving someone, rather than accidental misinformation. 