1) to go away from a person, place, etc, not interesting to return (abandon)

2) to go away from one's own country to live another (emigrate)

3) to go away from (a place), especially because of a crisis (evacuate)

4) permission (the usual word); to go away from (a person, place etc) (leave)

5) free, clear; to go away from (something); to stop (doing something) (quit)