Install aspell-fa by entering the following commands in the terminal:
sudo apt update sudo apt install aspell-fa
Description:
Persian dictionary for GNU Aspell
This package contains all the required files to add support for Persian (Farsi) language to GNU Aspell spell checker.
Homepage: http://ftp.gnu.org/gnu/aspell/dict/fa/
Version: 0.11-0-3
Section: universe/text