One who does not personally believe in a deity or God. Though some do fully deny the possibility of a God, many simply do not believe in one personally, and accept that others do. A group that faces a lot of discrimination, perhaps the most after Jews.
Atheist: Hello, I am an Atheist.

Tolerant Christian: Sup dude.

Intolerant Christian: Demon! Filth! Urchin! You're in denial of the omnipresent, wonderful God!

Tolerant Christian: Dude, please shut up, you're giving us a bad na-

Intolerant Christian: THEY'RE THE REASON THE WORLD SUCKS! THEY HAVE NO MORALS! GOOD THING I'M GOING TO HEAVEN AND FUCKERS LIKE THAT ARE GOING TO HELL!

Atheist: Actually, I do have morals, I believe killing is wrong, and-

Intolerant Christian: OF COURSE KILLING IS WRONG, IT'S IN THE 10 COMMANDMENTS!

Atheist: I don't follow the Bible though, because I actually
believe killing is wrong myself, I don't need to be ordered to by a "deity".

Intolerant Christian: THAT'S IT, I'M BRINGING MY FRIENDS OVER TO LYNCH YOU, MOTHERFUCKER!

Tolerant Christian: ...I hate myself.
by MrCuddles November 26, 2006

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Someone who believes that when we die, nothing happens.
Atheist: When we die, nothing happens.
Non-Atheist: So we don't go to heaven?
Atheist: No.
by jonnyg1 October 19, 2006

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a person who loves life not because a book told them too but because it is all that we have.someone who is in awe of the majesty of the universe but will not use an easy crutch like religion to explain the inexplicable.
a moral person who holds logic and truth as their guides.
love, respect and peace are not the preserve of the religous.
by be excellent to each other August 29, 2003

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Someone who believes in no God. Most people really don't care about religious beliefs and don't judge their friends off of them. You know what they say...
Atheist:I don't believe in God
Christian:Oh, that's cool
Atheist:What? Your not going to persecute me for saying that?
Christian:No, not at all. My best argument is this - If YOUR right and IM wrong about God, I lose nothing. However, if IM right and YOUR wrong, well, sucks to be you...
by yubber75 October 18, 2010

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Someone who believes in one less god than most other people.
Jesus: If I didn't believe in God, I wouldn't be a Muslim, I'd be an atheist!
by J2thaC June 07, 2010

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A person who believes in one less god than a monotheist.
One of the many things monotheists share with atheists, is that they don't believe in Thor at all.
by Maurog September 16, 2007

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Someone that thinks of a god or gods as impossible, or just doesn't really care. Atheism is a lack of belief, not a belief so atheism is not a religion. Atheists may or may not have a love of science. Some atheists have plausible reasons for being an atheist, while others don't. You can be one of the following kinds of atheists:

1) Someone that has had something personal happen with their religion and doesn't believe in god because of that personal problem

2) Angry atheist: Someone intolerant to religion.

3) retaliating atheist: Someone that fights back when theists (mostly Christians) pick a fight. NOTE: Some theists confuse this one with #2 because atheists don't want Christianity to be in the government or anything symbolizing the government. These include flags, post offices, schools, town/village/city halls, etc.

4) Someone that really doesn't care and so by their lack of belief, are classified as an atheist.

5) Agnostic atheist. This one is commonly confused as agnostics. There are no such things as agnostics in the belief system. You can be an agnostic atheist or an agnostic theist, but you can't be just an agnostic.
1)

"I'm an atheist"
"Why?"
"I have had personal troubles with religion"

2)
"I am intolerant to religion"
"Why?"
"Because it is the root of all evil"

3)
"I'm an atheist and I don't think religion should be in the government"
"You are an angry atheist"
"No, I just don't want the government forcing religion on me."

4)

"Are you a christian?"
"I don't really care"
"Are you an atheist?"
"Again, I don't care"

5)
"I'm an agnostic atheist. I don't believe there is enough evidence to prove the existence of a god."
by thegreatatheistdefiner June 01, 2009

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