When in a mission, to leave the map area by heading in any direction to cross the border This is the only acceptable way to leave or end a mission if you are not going to fight or are outmatched
If you disengage something, or if it disengages, it becomes separate from something which it has been attached to. She disengaged the film advance mechanism on the camera John gently disengaged himself from his sister's tearful embrace His front brake cable disengaged
become free; "in neutral, the gears disengage" release from something that holds fast, connects, or entangles; "I want to disengage myself from his influence"; "disengage the gears
To release from that with which anything is engaged, engrossed, involved, or entangled; to extricate; to detach; to set free; to liberate; to clear; as, to disengage one from a party, from broils and controversies, from an oath, promise, or occupation; to disengage the affections a favorite pursuit, the mind from study