agnosticism

[ag-nos-tuh-siz-uh m] /ægˈnɒs təˌsɪz əm/
noun
1.
the doctrine or belief of an agnostic.
2.
an intellectual doctrine or attitude affirming the uncertainty of all claims to ultimate knowledge.
Origin
1870-75; agnostic + -ism
Word Origin and History for agnosticism
n.

1870, from agnostic + -ism.

The agnostic does not simply say, "I do not know." He goes another step, and he says, with great emphasis, that you do not know. [Robert G. Ingersoll, "Reply to Dr. Lyman Abbott," 1890]

agnosticism in Culture
agnosticism [(ag-nos-tuh-siz-uhm)]

A denial of knowledge about whether there is or is not a God. An agnostic insists that it is impossible to prove that there is no God and impossible to prove that there is one. (Compare atheism.)