Agnosticism

Etymology: Greek agn?stos unknown, unknowable, from a- + gn?stos known, from gign?skein to know — more at know
Date: 1869
1: a person who holds the view that any ultimate reality (as God) is unknown and probably unknowable; broadly : one who is not committed to believing in either the existence or the nonexistence of God or a god
2: a person unwilling to commit to an opinion about something [political agnostics] [1]

Agnosticism (Greek: ?- a-, without + ?????? gn?sis, knowledge; after Gnosticism) is the philosophical view that the truth value of certain claims — particularly metaphysical claims regarding theology, afterlife or the existence of God, gods, deities, or even ultimate reality — is unknown or, depending on the form of agnosticism, inherently unknowable.[2]

—
[1] Merriam Webster Dictionary
[2] Wikipedia