Create a complete/huge dictionary for aspell.

[Hongyi Zhao <hongyi.zhao@gmail.com>]

On Ubuntu 20.04, I'm using aspell as the ispell checker program, which
can be confirmed with `C-h v ispell-program-name RET' as shown below:

;;;
ispell-program-name is a variable defined in ‘ispell.el’.

Its value is "/usr/bin/aspell"
;;;

I found that too many words are not included in the pre-established
aspell-en dictionary, say this one: destigmatize [1]:

$ aspell dump master | egrep -i destigmatize
$

For additional information about the packages installed on my
computer, see the following:

$ aspell --version
@(#) International Ispell Version 3.1.20 (but really Aspell 0.60.8)
$ dpkg --get-selections |grep ^aspell
aspell                        install
aspell-en                    install

So, I want to make a complete/huge dictionary for aspell, say, based
on the well known Webster's unabridged dictionary of the English
language.

[1] https://www.merriam-webster.com/dictionary/destigmatize

Any hints for achieving this aim?
Regards
-- 
Assoc. Prof. Hongyi Zhao <hongyi.zhao@gmail.com>
Theory and Simulation of Materials
Hebei Vocational University of Technology and Engineering
No. 473, Quannan West Street, Xindu District, Xingtai, Hebei province