piously

UK
/ˈpaɪ.əs.li/
US
/ˈpaɪ.əs.li/

Examples

He was accustomed to celebrate piously the day of his entrance into Christianity, the eleventh of September, as though it were his birthday.

Il avait l'habitude de célébrer pieusement le jour de son entrée dans le christianisme, le 11 septembre, comme si c'était son anniversaire.