This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Denc nañu waxtaan wii. Yónneel yeneen laaj soo soxlaa ndimbal.

US English words are not underlined by the spellchecker

  • 1 tontu
  • 1 am na jafe-jafe bii
  • 1 view
  • i mujjee tontu mooy Shadow110

Andrew Craucamp
Andrew Craucamp
more options

I have set the browser language to English UK. I have installed the English UK dictionary and set it as the default language. I was unable to remove the US dictionary through Firefox itself so I found the dictionary files and renamed [en_US.aff] to [en_US.aff.bak] which seems to have removed US English as a spellcheck option. UK English words are now considered correctly spelled yet US English words such as "customized" are also considered correctly spelled. Is there something I can do to ensure incorrectly spelled words are underlined or is this a bug?

I have set the browser language to English UK. I have installed the English UK dictionary and set it as the default language. I was unable to remove the US dictionary through Firefox itself so I found the dictionary files and renamed [en_US.aff] to [en_US.aff.bak] which seems to have removed US English as a spellcheck option. UK English words are now considered correctly spelled yet US English words such as "customized" are also considered correctly spelled. Is there something I can do to ensure incorrectly spelled words are underlined or is this a bug?

All Replies (1)

Shadow110
Shadow110
more options

It seems it is a bit of on and off my self as I use Canadian Dictionary. I seem to have to keep adding my stuff to the dictionary also after using a cleaner.

Copy/Paste about:preferences#general to Address Bar then Enter and make sure it is ticked. Is about all I know.


Please let us know if this solved your issue or if need further assistance.