Fundie or fundy (plural fundies) is a pejorative slang term used to refer to religious fundamentalists of any denomination, although it is primarily directed towards fundamentalist Christians. The term is intentionally derogatory, and is used most commonly by those opposed to the Christian Right movement. The term is often associated with religiously motivated conservative moral beliefs, especially those regarding social issues.
In etymological terms, fundie is an example of a mutated contraction resulting from relaxed pronunciation, where the original word (in this case Fundamentalist) is shortened and slightly altered. There is no recorded first use of the term, though its appearance in the American English vocabulary coincided with the rise of Christian politics in the 1970s. An early use of the term "fundie" was Isaac Asimov's novel, I, Robot, published in 1941.