Edit Mispelled Words in Firefox
Firefox keeps a per profile dictionary of custom words. To correct words which inadvertently enter it:
- Go to “%APPDATA%\Mozilla\Firefox\Profiles”
- On Mac OS X, go to “~/Library/Application Support/Firefox/Profiles”
- Enter the profile folder, usually like “.default”
- Edit “persdict.dat” with a text editor (WordPad, Notepad, or Textedit)
Save, and done.