aspell-st software package provides The Southern Sotho dictionary for aspell, you can install in your Ubuntu 16.10 (Yakkety Yak) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install aspell-st
aspell-st is installed in your system.
Make ensure the aspell-st package were installed using the commands given below,
$ sudo dpkg-query -l | grep aspell-st *
You will get with aspell-st package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Text Processing |
| Package | aspell-st |
| Version | 20070206-5ubuntu1 |
| Description | The Southern Sotho dictionary for aspell |
| Sub Section | text |