self-deceiving

[ self-di-see-ving, self- ]

/ ˈsɛlf dɪˈsi vɪŋ, ˌsɛlf- /

subject to self-deception; tending to deceive or fool oneself: a self-deceiving person.

used in deceiving oneself, especially in justifying a false belief, a morally reprehensible act, or the like: a self-deceiving argument.

Origin of self-deceiving

First recorded in 1605–15

Today's loose and lazy conservative talk about "socialism" is self-deceiving and therefore self-sabotaging.

David's Book Club: What Are Liberals Thinking? |David Frum |July 13, 2012 |DAILY BEAST
It ended, and was understood to end, in self-deceiving words.

Darkness and Dawn |Frederic W. Farrar
Fly from this scene where crime and its delusions still cling round your brain and your self-deceiving heart.

It Is Never Too Late to Mend |Charles Reade
It is the self-deceiving patriotism, the blind ancestor-worship, of which we are speaking as a phase of modern opinion.

New Ideas in India During the Nineteenth Century |John Morrison

No tickets-of-leave to let the hypocritical or self-deceiving ones loose upon the world.

It Is Never Too Late to Mend |Charles Reade
So am I, dead tired: you self-deceiving, self complacent thing.

Touch and Go |D. H. Lawrence