Definition of pietistical in US English:

pietistical

adjective

  • See pietism

    • ‘But pietistical ideas were profoundly different from all intellectual ideas.’
    • ‘"I would rather live on the verge of falling and let my security be in the all-sufficiency of the grace of God than to live in some kind of pietistical illusion of moral excellence."’
    • ‘Several European countries were experiencing similar pietistical trends.’