What about /usr/share/dict/words on any Unix system? How many words are we talking about? Like OED-Unabridged?

Answer from Robert on Stack Overflow
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GitHub
github.com › dwyl › english-words
GitHub - dwyl/english-words: :memo: A text file containing 479k English words for all your dictionary/word-based projects e.g: auto-completion / autosuggestion
:memo: A text file containing 479k English words for all your dictionary/word-based projects e.g: auto-completion / autosuggestion - dwyl/english-words
Starred by 11.8K users
Forked by 2K users
Languages   Python 54.0% | Shell 46.0%
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John Burkardt
people.sc.fsu.edu › ~jburkardt › datasets › words › words.html
words
sgb_words.txt, a list of 5,757 five-letter words used by Donald Knuth for demonstrations of the Stanford Graph Base (SGB); simplified_english.txt, a list of 815 words used in a version of Simplified English, a form of English with a restricted basic vocabulary, used aerospace engineering;
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GitHub
github.com › dwyl › english-words › blob › master › words.txt
english-words/words.txt at master · dwyl/english-words
:memo: A text file containing 479k English words for all your dictionary/word-based projects e.g: auto-completion / autosuggestion - english-words/words.txt at master · dwyl/english-words
Author   dwyl
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Gwicks
gwicks.net › dictionaries.htm
JUST WORDS! Dictionaries and Word Lists
JUST WORDS! has a wide range of dictionaries and word lists in QTYP dictionary and simple text formats.
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Aspell
wordlist.aspell.net › 12dicts-readme
Version 6 of the 12dicts word lists
A number of new lists, based on 6 "advanced learner's" ESL dictionaries, have been added. The sources are reasonably balanced between American and British English. In addition to 3of6game.txt and 3of6all.txt, which are more or less traditional word lists, 6phrase.txt, a list of multi-word phrases, ...
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Keithv
keithv.com › software › wlist
Big English Word Lists
Big English Word Lists · I created a bunch of large English word lists by taking words that appeared in the intersection of 12 different word lists. I used the following sources for the word lists:
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University of Michigan
www-personal.umich.edu › ~jlawler › wordlist.html
An English Word List
The link below references an alphabetized list of English words produced from a number of texts available free on the net. Since the sources were ASCII, the result is ASCII.
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GitHub
github.com › david47k › top-english-wordlists
GitHub - david47k/top-english-wordlists: Lists of most-frequently-used english words / nouns / verbs etc.
top_english_verbs_lower_100000.txt top_english_verbs_lower_50000.txt top_english_verbs_lower_20000.txt top_english_verbs_lower_10000.txt · top_english_verbs_mixed_100000.txt top_english_verbs_mixed_50000.txt top_english_verbs_mixed_20000.txt top_english_verbs_mixed_10000.txt
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Languages   Python 60.6% | Shell 39.4%
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Mieliestronk
mieliestronk.com › wordlist.html
The Corncob list of more than 58 000 English words
Mieliestronk's list of more than 58 000 English words · THIS list was compiled by merging different word-lists. The British spelling was preferred and American versions deleted. We have used it in crossword compiling (together with a programme) with much success.
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GitHub
raw.githubusercontent.com › MichaelWehar › Public-Domain-Word-Lists › master › 5000-more-common.txt
5000-more-common.txt - GitHub
e tooth situated mind disgrace censure estimate treat dead chemical grave deliver tail drop attention surrender hydrogen american sheet building preparation attend plain fabric limit appear fasten bind swelling show striking witness ornament possession bishop name collect hinder beyond beginning case covenant marriage foul yield type handsome uniform whatever earnest proof himself segment former critical difficulty proceed walk restrain prince setting trick leader female universal floor fire false depression seal class similar stamp sleep destroy following resemble formerly match management gr
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Curlewcommunications
curlewcommunications.uk › wordlist.html
British English Word List for Spell Checkers: Curlew Communications
brit-a-z.txt - Lower case words starting with a to z (checked once) readme.rtf - Information & licence document · These files are provided "as is" without any warranty. They may be used and copied freely for non-commercial purposes provided that this notice is included. Downloading of the files signifies acceptance of these conditions. All rights are reserved. Accept Conditions and Download British English Word lists.
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Text Fixer
textfixer.com › tutorials › common-english-words.txt
common-english-words.txt
a,able,about,across,after,all,almost,also,am,among,an,and,any,are,as,at,be,because,been,but,by,can,cannot,could,dear,did,do,does,either,else,ever,every,for,from,get,got,had,has,have,he,her,hers,him,his,how,however,i,if,in,into,is,it,its,just,least,let,like,likely,may,me,might,most,must,my,...
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PyPI
pypi.org › project › english-words
english-words · PyPI
To add a word list, say with identifier x, put the word list (one word per line), into a plain text file x.txt in the raw_data directory at the root of the repository.
      » pip install english-words
    
Published   Aug 14, 2025
Version   2.0.2
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MIT
mit.edu › ~ecprice › wordlist.10000
10000 Word list
iveness effects efficiency efficient efficiently effort efforts eg egg eggs egypt egyptian eh eight either ejaculation el elder elderly elect elected election elections electoral electric electrical electricity electro electron electronic electronics elegant element elementary elements elephant elevation eleven eligibility eligible eliminate elimination elite elizabeth ellen elliott ellis else elsewhere elvis em emacs email emails embassy embedded emerald emergency emerging emily eminem emirates emission emissions emma emotional emotions emperor emphasis empire empirical employ employed employ
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Internet Archive
archive.org › texts
A Compiled List of 194,434 English Words : JUST WORDS! - Anonymous : Free Download, Borrow, and Streaming : Internet Archive
This list adopted from the english3.txt word list from JUST WORDS!JUST WORDS! has a wide range of dictionaries and word lists in QTYP dictionary and simple...
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Stanford
www-cs-faculty.stanford.edu › ~knuth › sgb-words.txt
sgb-words.txt
uel navel paler puffy casks grime derby mamma gavel teddy vomit moans allot defer wield viper louse erred hewed abhor wrest waxen adage ardor stabs pored rondo loped fishy bible hires foals feuds jambs thuds jeers knead quirk rugby expel greys rigor ester lyres aback glues lotus lurid rungs hutch thyme valet tommy yokes epics trill pikes ozone caper chime frees famed leech smite neigh erode robed hoard salve conic gawky craze jacks gloat mushy rumps fetus wince pinks shalt toots glens cooed rusts stews shred parka chugs winks clots shrew booed filmy juror dents gummy grays hooky butte dogie po
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GitHub
github.com › jeremy-rifkin › Wordlist
GitHub - jeremy-rifkin/Wordlist: ~300,000 English words
This project combines multiple english word lists and create a more complete master list. master.txt contains ~300,000 words. This master word list is compiled by a Python script using the following resources (located in res/): File Name · Words In File · Source · a.txt ·
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Languages   Python
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Reddit
reddit.com › r/linguistics › large plaintext english dictionary/wordlist?
r/linguistics on Reddit: Large plaintext English dictionary/wordlist?
August 27, 2013 -

I'm looking for a comprehensive English dictionary/wordlist (i.e. a simple list of English words, without definitions or other information) in plaintext form. Ideally this would include regional variations in spelling (i.e. both British and American versions) and inflected forms (e.g. not only "play" but also "plays", "played" etc.)