Haredi

"Ultra-Orthodox Judaism

Haredi Judaism is the most theologically conservative form of Judaism. Haredi Judaism is often translated as ultra-orthodox Judaism, although Haredi Jews themselves object to this translation. They simply refer to themselves as Jews, and they consider more liberal forms of Judaism to be unauthentic."

http://judaism.about.com/od/ultraorthodoxjudaism/UltraOrthodox_Judaism.htm