disengagement

noun7

1. •
   Release or detachment from a physical situation or other involvement.

   • “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;[…]” — 1817
2. •
   The release or separation of a chemical.
3. •
   Withdrawal from combat, confrontation, or the assertion of influence.
4. •
   Termination of an agreement to be married.
5. •
   A circular movement of the blade that blocks an opponent's parry.

   • There was a quick flash, a disengagement, a feint, a lunge that was like a man's, and as her long left arm shot out like lightning, her foil bent nearly double. — 1895
6. •
   The emergence of the fetus from the birth canal.
7. •
   (old-fashioned) Leisure; relief from responsibilities or onerous activities.