Synonyms for Pious (same or very similar meaning)
WordNet sense 1 (devoutly religious):
devout, god-fearingWordNet sense 2 (having or showing belief in and reverence for a deity):
religiousWordNet sense 3 (excessively or hypocritically pious):
sanctimoniousWordNet sense 4 (showing great reverence for god):
godly, reverentFrom the ODE community, based on WordNetadd/edit