Office for Mac Issues

How to Stop Word for Mac from Changing English UK to US

Rana GarciaRana Garcia Oct 29, 2026 869 views

Question details

The user needs a way to prevent Word for Mac from automatically switching the document's proofing language from English UK to English US.

Product
Microsoft Word for Mac
Device & OS
macOS
Scenario
Editing a multilingual document and switching between different keyboard input methods, such as toggling between Korean and English.
Observed behavior
Word automatically overrides the set English UK proofing language, changing it to English US due to character-level formatting or input method switches.
Before you start

Ensure your macOS system language and keyboard input sources are prioritized for English (UK) in System Settings before modifying internal configurations in Word.

Solution 1Recommended

Use Configured Language Styles

Create and apply specific styles with locked language settings to prevent automatic proofing language shifts.

In Microsoft Word, character-level formatting can easily override the document's general language setting. Binding a specific language to a custom character or paragraph style ensures the proofing language remains strictly enforced, regardless of input switching.

1
Open the Styles pane

Go to the Home tab on the Word ribbon and click on the Styles Pane button to open the sidebar.

2
Create a new style

Click the 'New Style' button to create a custom character or paragraph style for your preferred language.

3
Configure the language format

In the new style dialog, click the 'Format' dropdown at the bottom, select 'Language', and choose 'English (UK)' or your desired language (e.g., Korean).

4
Apply the style

Save the style. Whenever you switch input methods, highlight the text and apply this style to lock in the correct proofing dictionary.

Use Configured Language Styles
Style Priority: Applying language properties via a style ensures that random character-level formatting overrides are ignored during spell checks.
Free Microsoft Office alternative

Try WPS Office for Seamless Multilingual Editing on Mac

Tired of fighting with Word's proofing language settings? WPS Office is a free, lightweight, and user-friendly alternative to Microsoft Office. It offers robust language support, a familiar interface, and excellent format compatibility for Mac users without unexpected formatting shifts.

  1. 1. Download WPS Office: Download and install WPS Office for Mac from the official website.
  2. 2. Open your document: Open your existing Word document (.docx) directly in WPS Writer without losing formatting.
  3. 3. Set your language: Navigate to the Review tab to easily set and lock your preferred proofing language for the document.
Free and lightweight Office suite optimized for Mac performanceFully compatible with Microsoft Word formats (.docx, .doc)Stable multilingual spell-checking without unexpected language shiftsFamiliar user interface for a zero-learning-curve transition
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Frequently Asked Questions

Why does Word automatically change my proofing language?

Word attempts to match the proofing language with your current keyboard input source or relies on the 'Detect language automatically' feature. This can sometimes incorrectly apply US English or let character-level formatting override your preference.

How do I turn off automatic language detection in Word for Mac?

Go to the 'Tools' menu, select 'Language', uncheck the box for 'Detect language automatically', and click 'OK'. This stops Word from guessing your language as you type.

Can I set English UK as the default for all new documents?

Yes. Navigate to Tools > Language, select 'English (UK)', click the 'Default' button, and confirm. This updates your Normal template so future documents use English UK by default.

Will removing the US keyboard from my Mac fix the issue?

Removing the US keyboard layout from macOS Input Sources often prevents Word from defaulting back to English US, as it removes the system-level trigger for the automatic switch.