fundamentalists

Fundamentalists are people who adhere strictly to the basic principles of a religion, ideology, or movement, often interpreting foundational texts literally and resisting modern reinterpretations.

The term originated with early 20th-century American Protestants who insisted on biblical inerrancy, but now applies broadly: Islamic fundamentalists, free-market fundamentalists.

The word often carries negative connotations, suggesting inflexibility or extremism, though some embrace it as commitment to core truths.