self-deceived

[self-di-seevd, self-]

adjective

1. holding an erroneous opinion of oneself, one's own effort, or the like.

2. being mistaken, forming an erroneous judgment, etc., in one's own mind, as from careless or wishful thinking.

   If you thought my friendship was love, you were self-deceived.

Word History and Origins

Origin of self-deceived¹

First recorded in 1665–75

Example Sentences

Maybe I’m no less self-deceived than anyone else.

Read more on The New Yorker

Could I have been self-deceived, delusional?

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No, not that the universe is a cold, empty, meaningless void and that hope and justice are pretty lies told by self-deceived fools.

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We know Mumler was a fraud, but we don’t know what kind of fraud — self-deceived true believer, confidence man or both?

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These ‘self-deceived’ students also earned overly lofty predictions from their peers.

Read more on Nature