[Borges]

So then what would the word descrbing a lack of belief?

[Diamond]

"Denial" is a word that could be used to refer to a lack of belief in a particular proposition. It seems to me though, that an absolute lack of belief, or an absolute skepticism, is a self-defeating and incoherent concept.

Cordially,

[Philo-Junius]

The word for those without belief on a particular point is “incredulous.”