Agnosticism is the view or belief that the existence of God, of the divine or the supernatural, is unknown and unknowable.
AGNOSTICISM: Why They Are Wrong to Question the Existence of God
Agnosticism comes from two Greek words (a, “no”; gnosis, “knowledge”). The term agnosticism was coined by T. H. Huxley. It literally means “no-knowledge,” the opposite of a Gnostic (Huxley, vol. 5). Thus, an agnostic is someone who claims not to know.