8
A person who does not believe in god or gods.
Usually can be broken down into two groups.
1- The ones who don't believe in god, but don't try to change your mind either. They believe that people should believe, or not believe, in whatever they want. They usually have a job/friends/life.
2-The idiots who spend every second of their life on the computer, and since they do not see life outside of a computer screen, they come to the conclusion there is no god. They then, in an attempt to look cool, badmouth everything they can about religion. Most of them are teenagers looking to rebel, saying that following religion is mindless, when in fact they are following something just to be different, which is equally as mindless. They are also usually miserable bastards.
Christian: Hey, do you believe in God?
Atheist 1: Nah man, that's not for me. You wanna go to the mall?
Christian: ok, sounds awesome.

Christian:I don't know, I think theres some sort of deity watching over us.
Atheist 2: Fuck you man there is no god your a fukin retart if u think that a fukin imaginry man in the sky you fucking suck what you believe in isnt true but i know is true because im an arrogant conceited rebel
Christian:I disagree...but whatever, it's all good.
Atheist 2:yeah you hide behidn your false teaching im so fuckin smart man i read an article online that says there wasnt a god man so i listen to that because society tells me to not believ in a god and you fucking suck cocks
Atheist 1: Shut the fuck up.
Christian: Agreed.
by WildWest February 06, 2008
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9
One who does not believe in a greater power. At least in the form of a non-physical power.

There are three kinds of Atheists.

1) The Emo ones, the ones who do not believe in God because they are simply depressed and things have not gone their way.
2) The elitist ones, the ones who feel they are smarter and more free-thinking than others for not believing in God.
3) The good ones, the ones who simply don't believe in God, are aware that it can't be proven if God exists or not and doesn't annoy every believer he/she comes across.
1) I'm an Atheist! If God existed my gf wouldn't have left me!
2) God is a fairy tale, I am so much smarter than anyone who believes in God.
3) I don't believe there is a God, but I won't be annoying about it.
by joe725 February 09, 2008
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10
A person who does not believe in a god. Nothing more, nothing less. It is the opposite of theist which is a person who believes in a supernatural being or deity.
Bob: Do you think god is real?
Rick: No, I am an atheist.
Bob: Oh, that's cool. Me too!
by aj00200 June 29, 2011
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11
Someone who does not believe in a deity.
Person A: Hey! How come I didn't see you at church yesterday?
Person B: Oh, I'm done with church and the whole God thing. I've decided to become an Atheist.
by Chel H. February 16, 2008
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12
One who, on evaluation of all the evidence presented, believes in the nonexistence of deities, God or otherwise. The term implies neither indecision nor the unwillingness to re-evaluate one's stance when presented with new evidence.
Atheists lack faith. Lack of faith is not a faith itself.
by Jennifer93 July 10, 2006
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13
An atheist is a person who does not believe in any sort of deity. Though this does not neccessarily precipitate smugness, it can often lead to it. Atheists however are impossible to stereotype just as any person of any other faith is impossible to stereotype due to the wide nature of this group.
"Do you go to Church?"
"No I am an atheist."
by Guy February 01, 2005
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14
1) A person who does not believe in any sort of deity or "God" but accepts that others do.

2) An elitist who like to mock anyone that disagrees with them, particularly christians.

In case 2 what's disturbing is the utter contempt, disrespect, and intolerance (and in some cases, hatred) these people have for anyone that disagrees with them. They refuse to go by the principles of live-and-let-live and do-unto-others. They will counter this assertion by arguing that religious people never live-and-let-live and are always forcing religion onto people. This is of course false, and only applies to a very small minority of religious people (such as the nutjobs at the WBC) and thus is a prime example of smearing people with a vastly over-generalized statement.

Most won't admit it, but they resent the fact that most modern nations allow freedom of religion for all. Ultimately, they would like to see this right taken away someday.
"Christianity is complete and utter bullshit" -- one of the many UD definition of christianity written by atheists
by bubba dawkins February 17, 2010
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