Here’s how you can enable automatic spelling and grammar check as you type in LibreOffice Writer.
LibreOffice Writer supports multiple language dictionaries that are used to validate the grammar of the words as you type alongside spelling. The Writer shows red color curved line under the incorrect word in the document after it validates against the supported dictionary. And grammar errors are shown blue color curved underline against phrases.
How to Enable Automatic Spelling and Grammar Check
There are two ways to check spelling and grammar.
A) Manual mode and B) Automatic Mode as you type.
To enable the automatic spelling and grammar check, go to Menu Tools → Options
. From the left side menu, select Language under Language Settings
. Make sure to choose appropriate language under “Default Languages for Documents” – e.g. Western: English (USA).
Go to Writing Aids Option to the left and under options choose ‘Check spelling as you type’ and ‘Check grammar as you type’.
Press OK.
Now Go to the “English Sentence Checking” option and select options under Grammar Checking and Punctuation.
Now you can see red curly underline on words that have spelling errors.

And the blue line shows only grammar errors as per your chosen options.
Looking for something else?
Read our complete tutorial index of Calc, Writer, Impress and Draw.

No. The grammar checker does NOT work. Period.
Agree. The spell checker does work, but the grammar checker does not.
I use the British English language because I study in the UK, so I need to hand in all work in BE. For British English, the grammar checker does not work.
For example if you repeat a word “The the dog …” libre office doesn’t notice it.
If you use American English instead of British English “utilize” vs “utilise”, libre office doesn’t notice it.
This is really problematic for me.
Limited grammar checking is available in Writer. The article is updated above.
Install the languagetool extension for grammar, works great! https://extensions.libreoffice.org/extensions/languagetool
thank you , what a wonderful relieve, exactly what I was need, missing and looking fore
Thank you so much! You just made my day!
I was having a huge issue of unable to set the spell checker to work.
Thank you!!!
I love your articles and this site. So tremendously helpful! Thank you 🙂
Worked well for me, instructions got me past some of the harder decisions. Thanks