Word-list data
Third-Party Notices
Last updated August 11, 2026
English Speller Database
The main game dictionary and part of the practice bot word list are derived from the English Speller Database (ESDB, formerly SCOWLv2).
Copyright 2000-2026 by Kevin Atkinson.
Permission to use, copy, modify, distribute, and sell any part of the English Speller Database (ESDB, previously known as SCOWLv2), or word lists created from it, is hereby granted without fee, provided that the above copyright notice appears in all copies and that both the above copyright notice and this notice appear in supporting documentation. Kevin Atkinson makes no representations about the suitability of this database for any purpose. It is provided "as is" without express or implied warranty.
ESDB project · Full copyright notice
wordfreq
Frequency ordering for bot_words.txt is an adaptation of data distributed with wordfreq. The list is made available under the Creative Commons Attribution-ShareAlike 4.0 International License.
Credit: wordfreq, Copyright 2022 Robyn Speer. The included frequency data draws on Google Books Ngrams, Leeds Internet Corpus, Wikipedia, ParaCrawl, OPUS OpenSubtitles, SUBTLEX, and other sources documented by the project. OpenSubtitles is credited as the source of its subtitle data. The SUBTLEX lists were created by Marc Brysbaert and collaborators and remain freely available data.
The practice bot list retains wordfreq ordering, intersects it with the ESDB core and the bundled main dictionary, applies project blocklists, and adds eligible short words. The wordfreq package was used only as a build-time generator and is not included as a runtime dependency.