hunspell-en-us software package provides English_american dictionary for hunspell, 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 hunspell-en-us
hunspell-en-us is installed in your system.
Make ensure the hunspell-en-us package were installed using the commands given below,
$ sudo dpkg-query -l | grep hunspell-en-us *
You will get with hunspell-en-us package name, version, architecture and description in a table
| Distro | Ubuntu 16 10 yakkety yak |
| Section | Text Processing |
| Package | hunspell-en-us |
| Version | 20070829-6ubuntu3 |
| Description | English_american dictionary for hunspell |
| Sub Section | text |