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1. Stress on the emotional and personal aspects of religion.
2. Affected or exaggerated piety.
3. Pietism A reform movement in the German Lutheran Church during the 1600s and 1700s, which strove to renew the devotional ideal in the Protestant religion.
[German Pietismus, from Latin pietās, piety; see piety.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
in a pietistical manner
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014