1. of, relating to, or characteristic of pietism or pietists; emphasizing personal religious devotion and moral conduct over formal doctrine or ritual
Usage: often used in historical or religious contexts; can carry a mildly critical connotation when suggesting excessive or ostentatious piety

Examples

• The pietistical movement of the 17th century stressed inner spiritual experience.
• Her pietistical approach to faith emphasized prayer and personal virtue.
• Pietistical communities often rejected elaborate church ceremonies.
• The pastor's pietistical sermons focused on moral improvement and devotion.
• Pietistical reformers sought to deepen believers' personal relationship with God.