quietism

Concise Oxford English Dictionary © 2008 Oxford University Press:
quietism/ˈkwʌɪətɪzəm/

▶noun

• 1 (in the Christian faith) devotional contemplation and abandonment of the will as a form of religious mysticism.

• 2 calm acceptance of things, without resistance.

– derivatives
quietist noun & adjective,
quietistic adjective.

– origin C17: from Ital. quietismo, based on L. quies, quiet- ‘quiet’.