pietism (n.)youdaoicibaDictYouDict[pietism 词源字典]
also Pietism, 1690s, from German Pietismus, originally applied in derision to the movement to revive personal piety in the Lutheran Church, begun in Frankfurt c. 1670 by Philipp Jakob Spener (1635-1705). See piety + -ism.[pietism etymology, pietism origin, 英语词源]