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Free German Dictionary Readme ============================= What is it? ¯¯¯¯¯¯¯¯¯¯¯ That's easy enough to answer: A list of German words as plain text file with slightly more than 1.9 million entries (including inflected forms). The format is one word per line, alphabetically ordered, ANSI-encoded (Latin-1), with Windows line endings (CR-LF). It is mainly distributed as a 7-Zip archive (german.7z). Other downloads available include binary Aspell dictionaries, for both German and Swiss spelling (, and a version that works with the free editor PSPad (PSPad.7z). How was it made? ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ The short answer is: basically by running Hunspell on a huge corpus. For a somewhat longer version, please refer to "Quellen und Methoden.txt" (in German) for now. I'm in the process of writing a Medium article with more details on how I made this. What is it good for? ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ That's another easy question. It can be used for all kinds of purposes, including dictionary attacks on weak passwords, but also autocompletion, word games, and such. Its chief purpose, however, is to be used as the main dictionary for the free command-line based spell checker GNU Aspell. That's why most entries were, and all forthcoming entries will be, very carefully spell-checked. GNU Aspell? Why would I want to use that instead of Hunspell? ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Most modern spell-checking software uses advanced algorithms that allow for compound words, such as the (in)famous "Donaudampfschifffahrts- gesellschaftskapitänsmützenabzeichen." While this is undeniably an advantage over the list-based approach taken by Aspell, the downside of it is that a large number of misspellings will not be detected unless they are expressly blacklisted. "Vorgesetze," "Währungsfond," "National- soziallisten," "Uhrlaubantrag" are cases in point. Most spell checkers do not recognize those as errors, but Aspell does. On the minus side, there will inevitably be plenty of false positives, even with a huge dictionary like this one. How to use the word list as input for Aspell ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Obviously, you'll need GNU Aspell as a prerequisite. Get it from Most Windows users will want to download the binary Win32 port and the precompiled German dictionaries by Björn Jacke, available from Install both to a directory of your choice, in an MS Windows environment preferably something like %PROGRAMFILES%\aspell\ After completing the installation process, navigate to your aspell\bin directory in a command line and type: aspell --lang=de create master ./de-only.rws < path\to\german.dic This will create the file de-only.rws, which you should move to the aspell\dict folder, replacing the one that comes with Björn's German language pack for Aspell. If you want a more tolerant check, get the file and merge it into the word list before compiling. Be warned that this file contains some words that aren't correct according to Duden, though. Rather than compiling the dictionary for yourself, you may want to download my precompiled Aspell dictionary files provided at (compiled with Aspell 0.50.3 on 32-bit Windows). Just copy the contents of the archive to the dict subfolder of your Aspell installation. Looks like a lot of tedious work. Can I help? ¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯ Yes. The Austrian and Swiss word lists are quite poor and need someone to look after them, for one thing. Also, you could help by proofreading various lists with tens of thousands of words. Contact me via the forum or janschreiber (at) And I never say no to a user dictionary sent via email. Credits ¯¯¯¯¯¯¯ This project is a dwarf on the shoulders of giants. Thanks to: - Kevin Atkinson (GNU Aspell) - László Németh (Hunspell) - Björn Jacke (igerman98 dictionaries) - Franz Michael Baumann (extended "DE-frami" Hunspell dictionary) - Marcin Miłkowski and Daniel Naber (LanguageTool) - Wolfgang Lezius (Morphy) - Jan Fiala (PSPad) - Don Ho (Notepad++) - Jens Lorenz (old spell checker for Notepad++) - Sergey Semushin (newer DSpellCheck plugin for Notepad++) - Kim Haskell and Denis G. Sureau (Dictionary maker tools) - Matthias Hüning (TextSTAT) - Jimbo Wales and the Wikipedia community (Wikipedia) - various contributors (old Joe and Synonymfresser in particular) - (online dictionary)
Source: readme.txt, updated 2017-07-02