Agnostic

Pronunciation: ag-'näs-tik, &g-
Function: noun
Etymology: Greek agnOstos unknown, unknowable, from a- + gnOstos known, from gignOskein to know

a person who holds the view that any ultimate reality (as God) is unknown and prob. unknowable; broadly : one who is not committed to believing in either the existence or the nonexistence of God or a god