Someone who believes that knowledge is not possible for themselves, some to different extents. They may believe that knowledge is possible, but paradoxically, it's impossible for them to know. While one will confine this to the metaphysical, most famously, regarding the existence of God, others will believe that they can know nothing at all, as not even their senses can be trusted.

Agnostics are often well-educated, and even more often do they see themselves as such. An agnostic, by virtue of their belief, typically sees themself as a very skeptical and critical person, and indeed, they usually are. They are often more intelligent on average than those who believe they know things, or at least, so the stereotype goes. Because of this, they often develop a sense of superiority, by which they can logically and rationally transcend the arguments of less-intelligent theists, who tend to be the most vocal ones.

An agnostic esteems above all else the scientific method. It is the infallible absolute of the agnostic. Everything must be empirically demonstrable to an agnostic, or it cannot be known to exist. A typical argument an atheist would use against a theist would be: "Since you cannot prove the existence of your God, how do you know that he exists?"

An agnostic attempts to apply empiricism to absolutely every aspect of reality. A thing does not exist unless it can be "scientifically proven". A modern understanding of science is the typical rhetoric of the agnostic.
Theist: "Do you believe in God?"

Agnostic: "I do not, because it is impossible to prove the existence of God. In fact, I do not believe it is possible to prove the existence of anything, as everything we've known is a product or our subjective consciousness."

Theist: "Are you sure?"

Agnostic: "Yes, I am 100% sure."

OR

Agnostic: "If a thing cannot be proven scientifically, there is no way to know that it exists"

Philosopher dude: "But you are assuming the existence of knowledge, which in itself is a totally abstract concept that is entirely unprovable by those means. If you are to apply the scientific method to every facet of knowledge, with our current understanding of perception and cognition, it would be impossible to trust your own senses, and everything would be unprovable, and hence, you could know nothing at all, including the validity of the scientific method."

Agnostic: "Any ideas of yours cannot be empirically proven, so I need not listen to you."

Philosopher dude: *facepalm.
by Philosopher dude December 27, 2010

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An atheist who fears being hit by lightning.
He is agnostic, he isn't sure if god exists.
by TheOtherDrG April 12, 2011

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A religion where the people that follow under it do not accept nor deny the existence of God or a greater being. Also who is tolerant of other people's religions.
I am an Agnostic, not a Christian, so I don't go to church, read the bible or believe in god.
by girlslovepink June 26, 2006

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A person who is unsure whether they believe in a God.
Agnosticism - unsure if they believe in God.
Bobert: Hey Robert, do you believe in a God?
Robert: Hmm...should I be? I'm pretty Agnostic.
by (( ({>O<}) )) October 09, 2009

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1. Someone who considers ancient texts to be on the same level of credibility as scientific research.

2. Someone who is fully aware of the abundance of evidence refuting the claims of religion, but couldn't care less about religious ideology ruining the world.
Agnostic: "CAN YOU PROVE THAT!? PROVE IT!! YOU CAN'T PROVE THAT !!!! LET'S SEE YOU TRY AND PROVE IT!!"

Atheist: "Stop crying. Not believing in something because of a lack of evidence is rational. Believing in something without evidence is irrational. Saying both sides of the argument are equal is both smug and stupid."
by PedroPierre December 16, 2010

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An agnostic is someone who adopts Pascal's Wager as their "life philosophy".

Agnostics are to bible thumpers as mall goths are to yuppies.

Agnostics are to Atheists as something is to nothing.
by concernedmother April 03, 2009

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A person really straddeling the fence between Theism and Atheism. One who struggles with the thought of having or not having a Soul. A person who would like to have undying proof that there is a Higher Being, afterlife with Pearly White Gates, and most of all, something to look forward to after this life. Until then, I will live this one as if there will not be anything after this.
I consider myself an Agnostic until someone Gives me proof, Show me the Devil, I don't care, because if he exist then GOD has to exist.
by Martyfoote August 29, 2006

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According to Stephen Colbert, an agnostic person is just an atheist person with no balls.
For those without the balls to become an atheist, they become agnostic.
by Chinacan March 21, 2010

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