Set English as Word’s preferred display language under File > Options > Language, then close and reopen all Office applications.
- Open Word.
- Go to File > Options > Language.
- Under Office display language, select English.
- Select Set as Preferred.
- If English is not listed:
- Select Add a Language.
- Add English.
- Select it and choose Set as Preferred.
- Close Word and any other open Office applications, then reopen Word.
The display-language setting controls Word’s ribbon, buttons, menus, and dialog boxes. The preferred language appears in bold at the top of the language list.^1^
If spelling and grammar also remain German
Display language and authoring/proofing language are separate settings. In the same File > Options > Language window:
- Find Office authoring languages and proofing.
- Select English.
- Select Set as Preferred.
- If English is absent, select Add a Language, add it, and then make it preferred.
- If Proofing available appears beside English, select that link to obtain the required proofing tools.^1^
For an existing document whose text is still marked as German, select the affected text and change its proofing language. Word stores language as a text-level attribute, so changing Office’s default does not automatically alter existing document content.^2^
References
- Add an editing or authoring language or set language preferences in Office | Microsoft Support
- how to stop language defaulting to us english - Microsoft Q&A