IPA: //æɡˈnɒstɪk//
KK: /æɡˈnɑːstɪk/
Describing a person who believes that it is impossible to know whether God exists or not, or relating to the idea that certain things are unknown or unknowable.
He identified as an agnostic, believing that the existence of a higher power is unknown.
A person who believes that it is not possible to know if there is a God or not, and is uncertain about religious beliefs.
As an agnostic, she felt that the existence of God was beyond human understanding.
Agnostic → It is formed from "a-" (meaning without) and "gnosis" (from Greek "γνῶσις", meaning knowledge). The word "agnostic" refers to someone who believes that the existence of God or the divine is unknown or unknowable, thus lacking knowledge about it.
Think of 'without' ('a-') knowledge ('gnosis') — that's why an agnostic is someone who feels they don't have knowledge about the existence of God.