If you don’t want spellchecking, then no. You can just change the keyboard layout.
If you do want spellchecking then yes, you will need to install some kind of language pack.
I’m not sure how libreoffice does it, but Firefox has different language packs for translating the UI and for spellchecking.
Are the extra dialects taking up too much space for you?
The system is in Unicode throughout, so it can handle any language, whatever it's set to. The only thing to check is input. Maybe use a compose key, and or switch to international qwerty.
From Wikipedia, the free encyclopedia
Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
Community icon by Alpár-Etele Méder, licensed under CC BY 3.0