Two languages in single document

[msangel]

I have a document where I have mixed Ukrainian and English language. Is there a way to have spellcheck to work for both of them same time? So far I found only a way to define single language per entire document…

[Villeroy]

Spelling checker Libreoffice Writer behaves in a strange way

This entire document, with all its paragraph styles and character styles, has the language attribute “English (UK)”. LibreOffice supports multilingual documents. When the spell checker finds some error in a text snippet, it reports the error in the context of the text language. When the spell checker does not find any error, it does not show any language. This is a bilingual document with a German paragraph written in English English paragraph written in English German paragraph written in G…

[Wanderer]

Check the help. You can set a language for the document and have individual languages for paragraphs. This is done by creating different styles for paragraphs. Also you can use character styles, if you change language inside a paragraph:

https://help.libreoffice.org/latest/en-US/text/shared/guide/language_select.html