How would I get Canadian English for spell check, and thesaurus on Ubuntu 14.10.
Go into the menu under Tools, then click Options at the bottom resulting in a dialog appearing. Open the ‘Language Settings’ category and click on the ‘Language’ entry underneath it. Set ‘English (Canada)’ in the drop down list entitled ‘Local setting:’ and ‘Western:’.
You can install the dictionary via the terminal.
$ sudo apt-get install hunspell-en-ca
For the thesaurus, I only found Australian and American packages.
$ apt-cache search mythes-en-*
mythes-en-au - Australian English Thesaurus for OpenOffice.org
mythes-en-us - English Thesaurus for LibreOffice