PIETISM
religiosity, religionism, religiousism, pietism
(noun) exaggerated or affected piety and religious zeal
Pietism
(noun) 17th and 18th-century German movement in the Lutheran Church stressing personal piety and devotion
Source: WordNet® 3.1
Etymology
Noun
pietism (countable and uncountable, plural pietisms)
(Christianity, often capitalized) A movement in the Lutheran church in the 17th and 18th centuries, calling for a return to practical and devout Christianity.
Source: Wiktionary
Pi"e*tism, n. Etym: [Cf. G. pietismus, F. piétisme.]
1. The principle or practice of the Pietists.
2. Strict devotion; also, affectation of devotion.
The Schöne Seele, that ideal of gentle pietism, in "Wilhelm Meister."
W. Pater.
Source: Webster’s Unabridged Dictionary 1913 Edition