This article describes how to add additional spellchecking dictionaries to complement the ones shipping with SDL Trados Studio by default.
For information on how to update existing dictionaries, refer to Updating spell checking language dictionaries in SDL Trados Studio.
Spell checking in SDL Trados Studio is based on the Hunspell engine, an open-source development that is also used in other applications such as OpenOffice and StarOffice. You can download spell-checking dictionaries from public sites and edit the spell checking configuration file in SDL Trados Studio, thereby extending the spell checking support for more languages than shipping with the product out of the box.
You can use Hunspell Dictionary Manager from the App Store https://appstore.sdl.com/language/app/hunspell-dictionary-manager/928/
The procedure below describes how to download a dictionary from the Open Office Wiki Web site (http://wiki.services.openoffice.org/wiki/Dictionaries). The language downloaded is Irish (Ireland) as Irish is a language that is not supported out of the box.