Kingsoft Office 2013 now supports 2 languages for spell check purposes - English (United States) and English (United Kingdom). To add new dictionaries to Kingsoft Office for spell check, please take the following steps.
Step 1 Download your desired dictionary files from the internet.
Step 2 Unzip the dictionary files and save the dictionary folder to this path:
Under Windows 8: C:\Program Files (x86)\Kingsoft\Kingsoft Office\office6\dicts
Under Windows 7: C:\Program Files\Kingsoft\Kingsoft Office\office6\dicts
Step 3 Launch Kingsoft Office to see the changes.
Go to Review > Check Spelling > Set SpellcheckLanguage (2013 interface) or Tools > Set SpellcheckLanguage (Classic interface), and the added dictionaries are listed in the following dialog: