An example of back and forth is when a person goes to LA, then to San Francisco, then back to LA, then back to San Francisco again.
back and forth
- Backward and forward; to and fro: went back and forth in the rocking chair.
- From side to side: paced back and forth across the room.
- Alternative spelling of back and forth.
- From one place to another and back again.
- Going from one place or position to another and back again.
- The back and forth movement of the tide causes erosion of the coastline.