Forum Discussion
Language settings in Word online
With regard to my OS - it is Mac 10.15.7 and set to "Canadian English" because I am in Toronto. Word Online tells me "colour" is spelled wrong but it is correct. It's therefore got nothing to do with the language of the OS.
And to repeat, in multiple areas of the MS 365 and Online Word I have it set to Canadian English but it doesn't work correctly.
Clearly it's a work in progress as is other aspects of the software. Today I had an issue creating a copy of a file in Excel Online - it would not allow creation of copy via "save as" so I had to download a copy as a workaround.
In my experience, the web-based versions of Office programs give us (as users) very little control. You could try changing the language settings for your OneDrive account, as suggested by other contributors in this thread. Maybe that will fix the issue you are experiencing.
Note that I am unable to offer advice that specifically applies to Word in a Mac environment, because I am a PC user myself.
An important distinction, on both Mac and PC platforms, is that the language in a specific document may differ from the default you have specified. This often becomes apparent when you receive a document from someone else.