See here for the motivation of this repository. Basically, the aim is to build an exhaustive Enaglish word list for ispell and company-ispell, hence the name american-english-exhaustive is used. The target audience is academic research and technology users who use Emacs as a way of life.

The stardict relevant word lists are generated by pyglossary using the dictionaries download from here. The following steps is a example to create these word lists which I've described here:

$ sudo apt-get install python3-tk tix
# pyenv python environment for this operation:
$ pyenv shell datasci
$ pip install gobject PyGObject pyglossary
$ mkdir -p ~/.stardict/dic && cd $_
# Do the same steps for other stardict dictionaries to generate the csv files.
$ curl -O http://download.huzheng.org/bigdict/stardict-Webster_s_Unabridged_3-2.4.2.tar.bz2
$ tar xvf stardict-Webster_s_Unabridged_3-2.4.2.tar.bz2
$ cd stardict-Webster_s_Unabridged_3-2.4.2
$ pyglossary Webster_s_Unabridged_3.ifo Webster_s_Unabridged_3.csv
# Extract the word list entries from the above csv files:
$ for i in *.csv; do grep -hv '^"#' $i | awk -F, '{sub(/^["]/,"",$1);sub(/["]$/,"",$1);print $1}' > ${i%.csv}.txt; done

The word list american-english-insane is generated by SCOWL Custom List/Dictionary Creator with the following option:

The word list words.txt comes here. Finally the word list american-english-exhaustive is generated by the following command:

# https://groups.google.com/g/comp.unix.shell/c/ha5t3U54GmY/m/oQ_wd0HOBAAJ
# https://groups.google.com/g/comp.unix.shell/c/ha5t3U54GmY/m/bpLYxoqEAAAJ
$ find ./source -type f -exec cat {} + | sort -uo american-english-exhaustive
# or
$ find ./source -type f -print0 | xargs -0 cat | sort -uo american-english-exhaustive

Set the follownig variable in Emacs initialization file to use american-english-exhaustive:

(setq ispell-alternate-dictionary (file-truename "/path/to/american-english-exhaustive"))
;or
;(setq company-ispell-dictionary (file-truename "/path/to/american-english-exhaustive"))