To manage keyboard dictionaries, go to Settings> Personal> Language & input.
You can add your own words to your personal dictionary so that your tablet remembers them. Touch the Add icon to add a word or phrase, as well as a shortcut to easily use that word or phrase
- Touch the 'Settings' icon next to Android keyboard
- Touch 'Add-on dictionaries'. You'll see dictionaries for other languages that you can download to your device
- Touch the dictionary you want, then touch 'Install'