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A person who takes their religion so literally and to such extremes that they contradict the very basis of their faith. They typically believe in a literal, verbatim interpretation of their scripture. They also have ridiculous, childish defenses to intelligent criticism of their beliefs that border on insanity. The level of hypocrisy and stupidity most of these people exhibit is truly profound.

Prime examples of fundamentalists are the geniuses who call themselves Christians and march around with signs that say "GOD HATES FAGS," seriously suggest that the earth is 6,000 years old when an overwhelming amount of scientific evidence proves otherwise, or tell women that they are filthy when they are menstruating (because it's in the Bible, you know).

Fundamentalists in general give religion a bad name. By definiition, it is impossible for any religion or belief structure that is centered on love, compassion, understanding, and forgiveness (most of the major religions are) to be anything but great. However, when people watch the news and see these dumbasses parading around with their "THANK GOD FOR AIDS - FAGS GO TO HELL" signs and calling themselves Christians, it tends to leave a bad taste in the mouth.

See also asshat.
Jerry Falwell blamed the 9/11 attacks on the wrath of God, which he claims was incited by gays, lesbians, and pornography. He's a fundamentalist.
by Matrexius March 03, 2005
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An adherent of a religion (especially Protestant Christianity but can also be Catholicism, Mormonism, Islam, Judaism, Hinduism or other faith), characterized by a rigid orthodoxy, a belief in absolute inerrancy and infallibility of a religion's scripture, founder, or primitive organization, a reactionary stance in social and political matters as well as religious, and usually rejection of modern scholarship and scientific question of relgious myth and doctrine: also fundamentalism.
Fundamentalists dominate newer, smaller and more radical Christian denominations, especially Pentecostal and independent Baptist, but have had limited success in mainline Protestant bodies, except for the Southern Baptist Convention.
by LudwigVan November 10, 2003
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Person so desperate to be able to say things like "There can be no compromise!" and think things like "I am right and everyone else is wrong!" that they give up all critical thinking, accept literally the parts of a holy book that support their prejudices and take an unquestioning stance on one interpretation of a religion. They won't, of course, admit that it's only an interpretation; it's the ONE AND ONLY TRUTH. They often like to write words like TRUTH in BLOCK CAPITALS. See also Landover Baptist
I love the way fundamentalists claim the Bible is inerrant until you show them a bit they don't like, then start talking like liberals about "context" and "interpretation".
by Adrian Petyt December 16, 2003
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Somebody that lost contact with what their religion, or principles really are, and hurt people with their principles, mentally and physically.
by Christy October 12, 2003
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One who believes that principles are more important than people, or results.
Osama bin Laden
Tomas Torquemada
Jerry Falwell
Meir Kahane
Ted Unabomber

One can be a fundamentalist in any religious or secular creed.
by Chuck Hastings June 28, 2003
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An adherent to fundamentalism, which invariably refers to a reductionist, inflexible, pretentious, and cultish modern-day invention that falsely pretends to represent the original, most pure/orthodox version of a given ideology.
Christian fundamentalists are very influential in American politics.
ISIS are Islamic fundamentalists.
Haredim are Jewish fundamentalists.
Milo Yiannapoulos is a free speech fundamentalist.
by Valerie Morghulis June 02, 2017
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One who complains about all works of fiction better then the one which they live by.
Those fundamentalists think comic books, video games, and role-playing games are works of the devil and all who enjoy them will burn in hell.
by Pyro Infernos April 22, 2006
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