Atheism

Absence of belief in the existence of deities; the opposite of theism

Atheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there are no deities. Atheism is contrasted with theism, which in its most general form is the belief that at least one deity exists.

This keyword could refer to multiple things. Here are some suggestions: