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Someone who lacks belief in a deity or higher power. That's all. Atheists are not the hateful, arrogant, stubborn jerks they are often made out to be. Stop disrespecting atheists based on negative encounters you've had with some of them. Not all of them are intolerant, arrogant people who think they have the answer to everything. I've met several atheists who happen to be very intelligent and respectful people, and in turn are very respectable. It's true, some ARE arrogant, some ARE hateful, some DON'T know when to shut up, but honestly, that is no reason to judge all of them. They have the right to believe or not to believe in whatever they want, just like everyone else does. By the way, this is coming from a Christian!
An atheist is someone who does not believe in a deity or higher entity. That is all an atheist is.
by Christianguy27462 April 10, 2014
A person who tries to prove the non-existence of an entity that resides outside of the universe using the laws of the universe
There is nothing wrong with being Atheist. This is just my opinion.
by Name removed by the NSA November 15, 2013
A smart, logical person who has there own opinions and thoughts instead of believing whatever there parents brainwashed them with.
I'm an atheist. I listen to scientific facts because I'm not an idiot and don't believe what is told to me. I have my own opinions.
by Richy_Greenback March 23, 2013
An atheist is someone who does not believe in a deity or god. Some can be arrogant however others generally don't care. (Note, stop being biased on this article Athiests and Theists.)
Theist:Do you think some of the Athiests on Urban Dictionary are biased?

Atheist: No, you aren't either though because you aren't a bad person trying to convert people and being intolerant. Instead you acctualy help people, like at the soup kitchen.
by Feihts May 12, 2009
Usually a close-minded, arrogant,self-centered individual who thinks that because they don't believe in a higher being it makes them some how superior and enlightened....they usually don't listen to anything that people of faith have to say because thay'e too busy being "open-minded to all things"
Person of Faith: Hi would you like to come to church/synogogue/mosque/temple?
Atheist: Church? hahaha you are less evolved then I for I refuse to listen to those who have faith I am too open minded to science even though it's theories have been known to be proven wrong
POF: That sounds close minded to me
Atheist: Close minded? you dont listen to science...science is always right
POF:Right?... you mean right like the world is flat?or that you can make gold from rocks?
by YouMetAMan January 01, 2008
There are two in-use definitions of the word atheist:

1.) A person who lacks belief in a god or gods. People who use this definition categorize atheists as either negative (or implicit or weak) atheists or positive (or explicit or strong) atheists. Negative atheists, while they don't believe in a god, do not positively assert that no gods exist. Positive atheists, however, do.

2.) A person who believes that no god or gods exist.

Those who consider themselves atheists (who are usually positive atheists) tend to define 'atheist' using the former definition, and those who believe in a god or gods tend to define 'atheist' using the latter. In both cases, this seems to be a demagogic practice intended to classify either as many or as few people as atheists as possible. Negative atheists are usually referred to as agnostics.

While neither definition of atheism entails any personality traits of atheists or of those who do believe in a god or gods (sometimes referred to as 'theists'), both atheists and theists tend to believe that certain traits apply to all atheists/theists. Common myths about atheists include: all atheists are arrogant, immoral, rebellious, and/or intolerant; all atheists really believe in (the Christian) God and are simply in denial; all atheists are depressed and believe life is meaningless. Common myths about theists include: all theists are naive and/or intolerant; all theists don't really believe in their god(s) and just pretend to because they're afraid that if people realised that no god exists, there will be complete chaos; all theists are weak and look to their god(s) for comfort. It hardly needs to be said that while these myths apply to a select few individuals in each group, the claim that they apply to every atheist or every theist is false.

Negative atheists justify their lack of belief in god(s) by pointing out that no evidence exists for the existence of god(s), and justify their lack of disbelief by pointing out that no evidence exists for the nonexistence thereof. Positive atheists often assert that while no evidence for god(s) exists, it should be by default assumed that they do not, until evidence is found. Some also try to use logic to prove that God does not exist, but this is often attached by theists and weak atheists as being mere wordplay. Some theists and weak atheists also assert that logic is superficial and meaningless (which is an easily refutable claim), and that only one's inner feelings can lead them to truth. Some positive atheists (and deists), however, are led to their stance through their feelings. Some feel that because the world is filled with evil and malice, and all-loving, benevolent god cannot exist. Those who are led to their stance through this feeling, however, cannot justify their disbelief in a malevolent god in the same way. Some reject the idea of the Christian God because the Bible states that non-Christians are condemned to Hell, and reject the idea as being too disturbing. While the same argument can also be made against the gods of various other religions, including Islam and Zoroastrianism, it cannot be made against every god (in Judaism, for example, Hell does not exist).
"Do you believe in God?"
"No, I don't."
"Then you're an atheist?"
"I suppose. I don't believe God doesn't exist, so I could probably be called an agnostic instead. Some atheists may consider me a 'negative atheist', though."
"Don't you think atheists... er, would I call them 'positive atheists'? Don't you think they're intolerant?"
"Yes, you'd call them 'positive atheists', and no, I wouldn't say they're all intolerant. While some may come off as arrogant, they're just unable to understand how you can believe in God; you probably come off as arrogant to them, also, because you're unable to understand how they can disbelieve in God. People on both sides really need to make an effort to be more tolerant, and to discuss their stance on religion without using childish, immature insults."
by Archcomposer March 01, 2005
Someone who has actually read the Bible without grossly distorting its meaning into some sort of modern work of humanism. When atheists say hell is bull and sin isn't real, they are actually being intolerant, according to pussy agnostics and moderate Christians, who don't believe anything in the bible ever happened, but somehow think god exists anyway.
Atheist: Religion controls your way of life. Prime example, many gay people suffer through years of self-hate because religion says they are sick and "unnatural."

Agnostic: You should really tolerate their belief. Not all Christians believe that, even though it is taught in their holy book.

Atheist: I do. That's why I'm not knocking on their doors right now or slashing their throats. I'm only writing a definition on UD because I'm bored and kind of a loser and it's 1:30 AM and college is cancelled due to snow.
by joseffritz January 17, 2012