An Evangelical Atheist is a person that is an atheist and tries to spread atheism amongst theists. It is derived from Evangelism, meaning "Spreading Good News" as practised by Christianity. Due to the rise of the Conservative Christain movement in the United States of America and the increase of humanistic thought, along with the increased blending other many different religions, Atheism has become more and more popular. Evangelical atheist usually seeks to "convert" borderline theists, often by engagaing in debate with fundamentalists.

See asshole

An evangelical atheist is one who not only believes there is no god or other supreme being, but is obsessed with convincing everyone around them to become an atheist too, usually through hard-line intolerance (the kind they accuse other religions of). When cornered they usually try to put down their opponent's religion and bash them for 'blind faith', not realizing that their belief that there is no god is no more or less valid or provable than the other guy's belief that there is one.

Not to be confused with normal atheists/agnostics, who for the most part just dont talk about religion and accept the beliefs of those around them as their perogative. Evangelical atheists are particularly common on the Internet, as organized religion is generally accepted as part of 'the system' of global human society, and lately it's become cool on the Internet to hate 'the system'. Mostly teen angst if you ask me...

A person who has become extremely vocal about their atheism and is trying to convince others of their point of view. Often they are regarded as an embarrassment by fellow atheists.

Sometimes their behaviour is an indication of the insecurity they might feel in supporting their belief ,especially when confronted with reasonable arguments from the other side.
Some Evangelical Atheists seek relief and vindication by lobbying to pass laws that will make it difficult for religious people to voice their opinions in the public square, or teach their beliefs to their own children.Or even to assemble together with like minded people if the assembly is on governmnent property.(as in New York)

For others their proselyting rage may be an indication that their beliefs are foundering and they are on their way to a radical paradigm shift ( ie Anthony Flew )

An atheist who is so committed to his own doctrine of the non existence of God that he believes he holds to no doctrine at all and has thus been consumed by his actual philosophical dogma, cause, identity, and world view.

An atheist who holds his position by falsely claiming he has no position.

An atheist who splits not only semantically thin hair but thin air.

An atheist that combats religion as zealously as evangelicals thrust their religious beliefs on others.

A term often used by frustrated theists as a slur against atheists. The term is a contradiction since atheism is not a belief system or a cause, nor does it have any dogmas or requirements. An atheist doesn't convert people.