Noun
the strict adherence to the basic principles or doctrines of a religion, ideology, etc.
a form of Protestantism that takes the interpretation of every word in the sacred texts as literal truth
Source: WordNetThat sort of fundamentalism which treats possession of private property not as a desirable economic and personal asset but as a condition of liberty is a form of primitive religion. Neil Kinnock
The fall of Wall Street is for market fundamentalism what the fall of the Berlin Wall was for communism. Joseph Stiglitz
We realize that by criticizing Jewish fundamentalism we are criticizing a part of the past that we love. We wish that members of every human grouping would criticize their own past, even before criticizing others. Israel Shahak
[I am a humble adherent of]...Enlightenment Rationalist Fundamentalism. Ernest Gellner
Today's Islamic fundamentalism is also a cover for political motifs. We should not overlook the political motifs we encounter in forms of religious fanaticism. Jürgen Habermas
Basically, fundamentalism is a modern phenomenon. In the same way that Hitler evoked a mythological religion of German purity and the glory of the past, the Islamists use religion to evoke emotions and passions in people who have been oppressed for a long time in order to reach their purpose. Azar Nafisi