This is the 12554th most frequent Polish word.
naprawą
"Naprawą" means "repair" or "fixing" in English.
Here, 'naprawą' is the instrumental singular form of 'naprawa,' indicating the tool or means of action ('repair').
Pracownik zajmuje się naprawą samochodów.
The worker deals with car repairs.
In this sentence, 'naprawą' again occurs in the instrumental case, denoting the action of fixing or restoring the effects of an issue.
Rozwiązanie problemu mogło być tylko naprawą skutków awarii.
Solving the problem could only be a repair of the failure's effects.
Here, 'naprawą' indicates the means of the action using the instrumental case in Polish.