The Oxford Thesaurus An A-Z Dictionary of Synonyms - pious adj.

1) devout, religious, reverent, reverential, worshipful, dutiful, God-fearing, godly, faithful, holy, dedicated, devoted, spiritual, moral, good, virtuous, right-minded, saintly, holy, angelic, seraphic, Christ-like, godlike: Francis is a pious boy who attends church regularly. 2) hypocritical, sanctimonious, pietistic, self-righteous, Pharisaic, mealy-mouthed, pretended, fraudulent, goody-goody, unctuous, oily, Colloq Brit smarmy: You are rationalizing your bad behaviour with a lot of pious cant.