aspell-en software package provides English dictionary for GNU Aspell, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install aspell-en
aspell-en is installed in your system.
Make ensure the aspell-en package were installed using the commands given below,
$ sudo dpkg-query -l | grep aspell-en *
You will get with aspell-en package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Text Processing |
| Package | aspell-en |
| Version | 7.1-0-1.1 |
| Description | English dictionary for GNU Aspell |
| Sub Section | Text |