'Self-deception' definitions:

Definition of 'self-deception'

From: WordNet
noun
A misconception that is favorable to the person who holds it [syn: self-deception, self-deceit]

Definition of 'Self-deception'

From: GCIDE
  • Self-deception \Self`-de*cep"tion\, n. Self-deceit. [1913 Webster]