Wiktionary:AutoWikiBrowser

AutoWikiBrowser is a software that experienced users can use to change Wiktionary when doing many changes that are of the same type (such as adding a category to multiple pages). To prevent people from abusing it, users are required to be listed on the check page before being able to use it on Wiktionary. More information about getting access is available on that page.

More information about the software is available on the English Wikipedia.