General Synonyms:
* Go back
* Come back
* Retire
* Withdraw
* Give back
* Repatriate (for people or objects)
* Restitute (for something that has been taken away)
For Returning Objects:
* Give back
* Hand back
* Resubmit
* Send back
* Redeliver
For Returning from a Trip:
* Come home
* Go back home
* Go back to the office
For Returning a Value in Programming:
* Output
* Yield
* Emit
* Produce
For Returning a Favour:
* Reciprocate
* Repay
For Returning to a Previous State:
* Revert
* Go back to
* Restore
* Rewind
The best alternative depends on the specific context and what you want to emphasize.