Synonyms for Pietistical (same or very similar meaning)
WordNet sense 1 (of or relating to Pietism):
pietisticWordNet sense 2 (excessively or hypocritically pious):
holier-than-thou, pharisaic, pharisaical, sanctimonious, self-righteousWordNet sense 3 (having or showing or expressing reverence for a deity):
piousFrom the ODE community, based on WordNetadd/edit