Peace or tranquillity of mind; calmness; indifference; apathy; dispassion; indisturbance; inaction.

The system of the Quietists, who maintained that religion consists in the withdrawal of the mind from worldly interests and anxieties and its constant employment in the passive contemplation of God and his attributes.

A form of mysticism that consists of withdrawing the soul from the external world and fixing it solely on contemplating God.

a form of religious mysticism requiring withdrawal from all human effort and passive contemplation of God

Quietism is a Christian philosophy that swept through France, Italy and Spain during the 17th century, but it had much earlier origins. The mystics known as Quietists insist with more or less emphasis on intellectual stillness and interior passivity as essential conditions of perfection; and all have been officially proscribed as heresy in very explicit terms by the Roman Catholic Church.