unreverse

un- +‎ reverse

unreverse (third-person singular simple present unreverses, present participle unreversing, simple past and past participle unreversed)

1. (transitive) To restore from a reversed state; to reverse again, so as to turn the right way round.
   • 1955, Northrop Institute of Technology, Charles Edward Chapel, Aircraft Power Plants, page 299:

     Unreversing the propeller is accomplished by moving the throttle forward from the reverse position.

   • 2012, Craig S. Mullins, Database Administration:

     To do so, you will need to use program logic (or perhaps an exit routine, if supported by the DBMS) to reverse the values before inserting them into the columns. Of course, you will need to programmatically unreverse the values […]

• reverse

• revenuers, unreserve