How to add certain words to the spelling exclusion list

Word 365
Word provides many convenient mechanisms for working with words, abbreviations, and dictionaries. Along with creating your custom dictionaries, you can maintain the dictionary of exclusion words. For example, expressions such as “fat turkey”, or “disgusting smell” can be appropriate and formal for some texts, but phrases “fat girl”, “disgusting person” are inconvenient for many documents.

You can add some words to the spelling exclusion list that force Word for Microsoft 365 flags them as misspelled, even when listed in the primary or custom dictionary as correctly spelled words. Your exclusion dictionary applies to your entire Office suite (e.g., Excel, PowerPoint, and Outlook), not just Word.

To add some word to the spelling exclusion list, do the following:

   1.   Open the folder with dictionaries.

Dictionaries are standard files in your system, located by default in the system folder:

C:\Users\<user name>\AppData\Roaming\Microsoft\UProof

Note: You can find the file in the system as a file that begins with the words "ExcludeDictionary" and has a file extension of LEX.

The full name of the spelling exclude file includes a two-character language code (EN is English, and FR is French) and four hexadecimal digits that are called a "language LCID" (see them here

System folder for dictianeries in Word 365

Here, ExcludeDictionaryEN0409 is a file for English (United States), ExcludeDictionaryEN0909 is a file for English (United Kingdom).

   2.   Open an appropriate file in Notepad or your preferred editor.

Skip the following steps if you can open .lex files in the editor.

   2.1.   Right-click the file and select Open with... from the shortcut menu:

Open with in the shortcut menu Word 365

   2.2.   In the next dialog box, click the More apps ↓ link:

How do you want to open this file in Word 365

   2.3.   From the applications list, chose the editor you prefer to open .lex files. For example, Notepad.

Note: If you don't want to open .lex files with the selected editor in the future, remove the selection in the Always use this app to open .lex files option.

   2.4.   Click OK.

   3.   In the opened file, type the words you want to exclude (i.e., the words you want Word to mark as incorrect) on separate lines:

ExcludeDictionary file in Word 365

   4.   Save the ExcludeDictionary*.lex file and close it.

   5.   Restart Word.

The saved words of the exclusion dictionary should take effect after reopening Word and running the Editor:

Document with spelling exclusion list in Word 365

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