Is “Pietism” a Scrabble word?
Yes
PIETISM
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Pietism
/ˈpʌɪətɪz(ə)m/
noun
1.(often capitalized) A movement in the Lutheran church in the 17th and 18th centuries, calling for a return to practical and devout Christianity.