A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
I am seeing this issue too. At first I only noticed it in Name Manager in Excel. Now I checked your example which came up when i tried to search for this issue. I noticed I also have the button labelled wrong in the Find dialog.
I am on MacOS Tahoe 26.5.1 and Excel Version 16.110.1 (26062112) and my Mac preferred language settings is for English (New Zealand) only, Excel was set on English UK, though I have tried picking English US and English Australia but I think that just affects the document.
Most other dialogs I checked fine and in normal English. I have no reason to have ever used or selected Hungarian ever on my computer. I am in NZ.
Edit: Just after my comment I tried setting MacOS settings in 'Language and Region' to have English (US) as my most preferred language, and after closing / re opening Excel - the words were fine.
I now have tried English Australia, and UK which both put the dialogs in what I assume is Hungarian.
So... some silly bug related to non US English I guess.