Delusion – Belief in something that is not true – Belief in a lie
The loo shone (delusion) and he believed the loo was a God, even against all evidence to the contrary.
Examples of delusion in a sentence
It may be held by hostile critics that the whole thing is a delusion.
What you have just witnessed, he says, is a mere delusion of the sight.
We cannot afford to live much longer in a world of economic self delusion.