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’.
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.