The interpretation of every word in the sacred texts as literal truth WordNet 3.0

A form of Protestantism that takes the interpretation of every word in the sacred texts as literal truth Open English WordNet

Fundamentalism is a tendency among certain groups and individuals that is characterized by the application of a strict literal interpretation to scriptures, dogmas, or ideologies, along with a strong belief in the importance of distinguishing one's ingroup and outgroup, which leads to an emphasis on some conception of "purity", and a desire to return to a previous ideal from which advocates believe members have strayed. Wikipedia

The belief in, and usually the strict adherence to, the simple or "fundamental" ideas based on faith in a system of thought Wikipedia Disambiguation

Unwavering attachment to a set of irreducible beliefs Wikidata

The tendency to reduce a religion to its most fundamental tenets, based on strict interpretation of core texts. Wiktionary

Religion. Wiktionary (translation)