Absence of belief in god(s).
Atheism is absence of belief in god(s). It is not necessarily belief that no god(s) exist. Just as asexual is absence of sex in reproduction, not opposition to sex or asymmetrical is absence of symmetry, not opposition to symmetry. Atheism is simple absence of theism.

Frequently people confuse the theism vs atheism question with the gnostic vs agnostic question. The word gnostic means pertaining to knowledge. It is a question about whether a person is certain or "knows".

Everybody is either theist or atheist and everybody is either gnostic or agnostic. There are agnostic theists. They believe god(s) exist, but don't claim to know for sure personally. There are gnostic theists. They believe and claim to know for sure that god(s) exist. There are agnostic atheists. They do not believe in god(s), but do not claim to know with certainty that no god exists. There are also gnostic atheists who claim to know that no god exists. It possible and quite common among atheists to not have been convinced of the hypothesis that god(s) exist without taking the position that no god exists.
by AllmanBros August 30, 2015

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*Sigh* Okay, let me get this strait for most of you idiots.

Atheism does not mean you worship Satan.

Atheism means you believe in NO God of ANY type WHATSOEVER.

It is the doctrine or belief that there is no God
Christian: "You don't believe in God, so that means you're an evil Satanist."

Atheist: "No, it means I don't believe in some Jewish zombie that I somehow have to telepathically worship. Atheism means I believe that life came from science."
by Scootcha August 24, 2010

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Either 1) a lack of belief in god/supernatural being due to lack of evidence (weak evidence=agnosticism), or 2) denial of the existance of god/supernatural being. Despite some definitions listed here, atheism does not in its-self attack a single other religion-it is simply a lack of belief in a god. Some might be Satanist-which is by definition not atheism as it requires unfounded faith in a supernatural being ('Satan'); science, in most accepted definitions by scientists, involves testing and falsifying or corroborating of an idea, not stating "fact", and a claim to a supernatural being/god/God is not testable by purely scientific methods.
I agree with atheism because there is no credible evidence for God-only faith in texts that are open to interpretation.
by ATXDude March 02, 2006

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either the belief that there is no god, or the belief that humanity doesn't know enough to make assumptions that lean in any particular direction. not to be confused with satanism which is in fact a religion. atheism is NOT a religion but a lack thereof.
billions of people have died in history by people killing in the name of various gods or religions.
atheism is a bit less violent in most situations, dont you think?
by John Q. notaumbass February 28, 2008

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The stance arrived at when one extends the same incredulity to all religions equally, instead of being able to arbitrarily put blind faith into one.

Atheism is not an outright rejection of the possibility of deity, or an immature rebellion against god. Atheism is simply an unwillingness to accept any obviously ridiculous dogmas (like believing in a loving, intelligent god who sends people to hell for arbitrarily selecting the wrong set of beliefs) concerning the unknowable until presented with a reason to do so.
"Atheism is nothing more than the noises reasonable people make when in the presence of religious dogma." - Sam Harris
by JOSH V March 29, 2009

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A rejection of the belief in the existence of a God or Gods. Atheism itself is not a religion or a belief, but is accepted within some religious and spiritual belief systems, including Jainism, Buddhism, Hinduism, Neo-pagan and Wicca. Although some atheists are also anti-theists, who oppose organized religion others are merely indifferent. In spite of some people generalizing atheists as being immoral, they tend to have a lower crime rate and as a population are no less moral than theists.
Scientists and highly rational people tend to subscribe to atheism because they believe in Occam's Razor:
"A principle urging one to select among competing hypotheses that which makes the fewest assumptions and thereby offers the simplest explanation of the effect".
by kookycole May 26, 2012

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Opposite of religion. The idea that there is no God or deity of any sort. The idea that this world is it. Basically, that's it.

Atheists can be nice and considerate. But there are some who roam around (especially on the internet) that mock and ridicule theists, as if that's doing any good at all.
Jenna is an atheist. She believes in no God.

There are some people online who call themselves {Atheists] while ridiculing people online for no good reason. However, there are Atheists who aren't like that.

I wouldn't be surprised if the term Atheism didn't pass, judging by this website.
by Potatoe Joe July 28, 2015

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