Since some might miss the comment linking to it, I want to highlight this related question as well: Who or what compiled /usr/share/dict/words?<p>According to Wikipedia [1]: "In 1934, the New International Dictionary was revised and expanded for a second edition, which is popularly known as Webster’s Second or W2, although it was not published under that title."<p>[0] <a href="https://unix.stackexchange.com/questions/286787/who-or-what-compiled-usr-share-dict-words?rq=1" rel="nofollow">https://unix.stackexchange.com/questions/286787/who-or-what-...</a><p>[1] <a href="https://en.wikipedia.org/wiki/Webster%27s_Dictionary#Webster%E2%80%99s_New_International_Dictionary_(second_edition,_1934)" rel="nofollow">https://en.wikipedia.org/wiki/Webster%27s_Dictionary#Webster...</a>