self-deluded
adjective
self-de·lud·ed
ˌself-di-ˈlü-dəd
-dē-
: deluded by oneself or having deluded beliefs concerning oneself
I believe in second chances and people changing. I also believe in not being naive and self-deluded.—Emily Yoffe
There is only one reason to reject an accomplished singer in favour of a self-deluded no-hoper: because the comedic public humiliation of the worst applicants makes good television.—Neil McCormick
also
: characteristic of one who is self-deluded
self-deluded beliefs
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Merriam-Webster unabridged
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