From one place to another and back again.
Negotiations or discussions between two or more parties, a dialog.
The movement (of someone or something) forward followed by a return to the same position. May refer to a concept such as an emotional state or a relationship as well as a physical thing.
Going from one place or position to another and back again.
In, at or to various places; in one place and another.
From time to time; intermittently, occasionally.