FUNDAMENTALIST
fundamentalist, fundamentalistic
(adjective) of or relating to or characteristic of Protestant fundamentalism or its adherents
fundamentalist, fundamentalistic
(adjective) of or relating to or tending toward ideological fundamentalism
fundamentalist
(noun) a supporter of fundamentalism
fundamentalist
(noun) an adherent of fundamentalist principles
Source: WordNet® 3.1
Etymology
Noun
fundamentalist (plural fundamentalists)
One who reduces religion to strict interpretation of core or original texts.
Synonym: takfiri (Islam)
(finance) A trader who trades on the financial fundamentals of the companies involved, as opposed to a chartist or technician.
Antonyms: chartist, technician
(Christianity) Originally referred to an adherent of an American Christian movement that began as a response to the rejection of the accuracy of the Bible, the alleged deity of Christ, Christ's atonement for humanity, the virgin birth, and miracles.
(pejorative) A fundamentalist Christian.
Synonym: fundie
Usage notes
The Associated Press' AP Stylebook recommends that the term fundamentalist not be used for any group that does not apply the term to itself.
Source: Wiktionary