Trust Armory bundles an English word list (dictionary-en.txt) for its
offline, self-contained admin spellcheck feature.

Source: derived from the SCOWL (Spell Checker Oriented Word Lists)
project's en_US Hunspell dictionary, as packaged in Debian/Ubuntu's
"hunspell-en-us" package, expanded to include regular inflected forms
(plurals, past tense, etc.) using the dictionary's own affix rules.

SCOWL is maintained by Kevin Atkinson <kevina@users.sourceforge.net>.
Project page: http://wordlist.sourceforge.net/

License (from the SCOWL README):

  Copyright 2000-2011 by Kevin Atkinson

  Permission to use, copy, modify, distribute and sell these word
  lists, the associated scripts, the output created from the scripts,
  and its documentation for any purpose is hereby granted without fee,
  provided that the above copyright notice appears in all copies and
  that both that copyright notice and this permission notice appear in
  supporting documentation. Kevin Atkinson makes no representations
  about the suitability of this array for any purpose. It is provided
  "as is" without express or implied warranty.

No lookups, no network requests: the word list is loaded once from
this plugin's own files and checked against entirely in the browser.

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Supplement: ~355 additional entries were added by hand on top of the
SCOWL/Hunspell base list above, to cover two known gaps:

1. Common British English spellings (colour, organise, fulfil,
   travelled, centre, etc.) — the base list is US English only, so a
   handful of the most common UK spelling variants are added here to
   reduce false positives for British/Commonwealth English writers.
2. A few regular word forms missing from the base list itself (e.g.
   "describe"/"described"/"describing" — present in the source
   dictionary as related forms like "describable" and "describer",
   but the base verb and its plain inflections were absent).

This supplement isn't exhaustive — it covers the cases found so far,
not every possible gap in either direction.
