1580s, from French athéisme (16c.), from Greek atheos "without god" (see atheist). A slightly earlier form is represented by atheonism (1530s) which is perhaps from Italian atheo "athei [..]

n. The denial of the existence of God.

Atheism is characterized by an absence of belief in the existence of gods. Atheism is not a religion in the sense that Christianity, Islam, and, Judaism are. This absence of belief generally comes abo [..]

(n) the doctrine or belief that there is no God(n) a lack of belief in the existence of God or gods

System of views denying the existence of God (Deism) and usually other religious ideas such as life after death. Inasmuch as the concept of God generally represents the dominant forms of consciousness [..]

Atheism is an active belief in the non-existence of god. Unlike agnosticism, which simply says that the existence of god is unproven, atheism says definitively that there is no god, citing the lack of [..]

not to be confused with followers of mere agnosticism (from Gk. "not knowing") who treat the tenets of faiths as debatable and "not yet proven," one who follows a-t [..]

The belief that God does not exist. In the last two centuries, some of the most influential atheistic philosophers have been Karl Marx, Friedrich Nietzsche, Bertrand Russell, and Jean-Paul Sartre. Com [..]