I was wondering if someone has tested dictionaries on Ubuntu 15.10? I have found old posts and installed the Spanish dictionary from here but it wont let me choose it and I cant correct my documents written in Spanish.
Set up the system wide language settings as explained in the accepted answer here: How to install a LibreOffice Dictionary (Spelling Check, Thesaurus...).
I did this and then went to
Tools -> Options -> Language Settings -> Writing Aids and clicked the Edit button for writing aids. Selecting Spanish (Spain) now shows an entry under Spelling. It was empty before changing the system wide settings.
Then close the options and create a new paragraph style. In the Font tab of the paragraph style, change the language to Spanish (Spain).
Now in paragraphs using the new style, it underlines misspelled words in Spanish. For example if I enter "Hello", it is underlined as misspelled, but if I enter "Hola" it is not.
My system is Ubuntu 14.04 with LO 4.2.