Fundamentalism refers to one’s unwavering belief in the infallibility of the religious / philosophical scriptures in all matters of faith, religion an d philosophy. The attachment or belief is such strong that the believer takes a militant stand sometimes. Its purpose is to reaffirm the key theologic al tenets of one’s religion and stress on inerrancy of every word of his / her scriptures. Fundamentalism is generally understood to have religious connotation but it can be non-religious also.
Religious fundamentalism is the movement based on belief of a community (or individuals) in absolute authority of the sacred texts of its own religion or faith.
They believe that their own religion is beyond any fault and thus, should be forced on others. There is no scope for scrutiny or even criticism of the scriptures on logical explanations and scientific evidences.