agˈnästəˌsizəm, ə̇g- noun
( -s )
1.
a. : the doctrine that the existence or nature of any ultimate reality is unknown and probably unknowable or that any knowledge about matters of ultimate concern is impossible or improbable ; specifically : the doctrine that God or any first cause is unknown and probably unknowable
b. : a doctrine affirming that the existence of a god is possible but denying that there are any sufficient reasons for holding either that he does or does not exist — compare atheism , skepticism
2. : skepticism 1b
3. : an agnostic attitude or disposition