adj. 25B6; adjective
a pious family : RELIGIOUS, devout, God-fearing, churchgoing, spiritual, prayerful, holy, godly, saintly, dedicated, reverent, dutiful, righteous.
a pious platitude : SANCTIMONIOUS, hypocritical, insincere, self-righteous, holier-than-thou, pietistic, churchy; informal goody-goody; Brit. informal pi.
a pious hope : FORLORN, vain, doomed, hopeless, desperate; unlikely, unrealistic.
irreligious, sincere.