Manage Spelling Dictionary in Windows 10: Add or Remove Words
When autocorrect and highlight misspelled words are enabled in Windows 10, the system automatically checks for spelling errors as you type. If a word is not found in the dictionary, it is underlined in red. Adding a word to the dictionary prevents it from being highlighted as misspelled. But what if you accidentally add a wrong word to the dictionary?
Here is a step-by-step guide on how to add or remove words from the Windows 10 spell checking dictionary.
- Option 1: Add misspelled words to the dictionary for the current language
- Option 2: Manually add or remove words from the default.dic file for a specific language
Option 1: Add Words to the Dictionary for the Current Language
Add words to the dictionary to prevent them from being flagged as misspelled.
To add a word to the spell checking dictionary, right-click on the underlined word and select Add to dictionary.

Option 2: Add or Remove Words from the Default.dic File for a Language
Step 1: Open File Explorer.
Step 2: Navigate to the spelling dictionary location.
Type %AppData%\Microsoft\Spelling in the address bar and press Enter.

Step 3: Open the folder corresponding to the language you want to customize.

Step 4: Open the default.dic file using Notepad.

Step 5: Add or remove words as needed to prevent them from being highlighted as misspelled.
Tip: Enter one word per line. When finished, click File in Notepad and select Save As.

Tip: To reset the dictionary for a language, delete the default.dic file in Step 4. The file will be recreated when you next add a word to the dictionary for that language.
