disengagement

Release or detachment from a physical situation or other involvement.

moral disengagement

“Miss Vernon,” I said, “Mr Rashleigh, has recommended me to return my thanks to you for my speedy disengagement from the ridiculous accusation of Morris;[…]”

The release or separation of a chemical.

The Indians of the Orellanna, also, tell of horrible noises heard occasionally in the Paraguaxo, […] Others have endeavored to account for these discharges of "mountain artillery" on humbler principles; attributing them […] to the disengagement of hydrogen, produced by subterraneous beds of coal in a state of ignition.

Leisure; relief from responsibilities or onerous activities.

Withdrawal from combat, confrontation, or the assertion of influence.

Termination of an agreement to be married.