Hi @knowsnothin ,
Per my test, factors may affect Word Online display laguage are:
- Browser type
- Browser display language
- O365 display language
I suggest you to use Chrome and set browser display language to English.
Also, please refer to the following article to check whether the user has set the language to English as display language in O365:
Change your display language and time zone in Microsoft 365 for Business
I hope this information has been useful, please let me know if you still need assistance.
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