Green’s Dictionary of Slang is the largest historical dictionary of English slang. Written by Jonathon Green over 17 years from 1993, it reached the printed page in 2010 in a three-volume set containing nearly 100,000 entries supported by over 400,000 citations. The printed version of the dictionary received the Dartmouth Medal for outstanding works of reference from the American Library Association in 2012. It has been hailed by the New York Times as “the pièce de résistance of English slang studies” and by the British Sunday Times as “a stupendous achievement, in range, meticulous scholarship, and not least entertainment value.” The dictionary is now available in updated online form for the first time, complete with advanced search tools enabling search by definition and history, and an expanded bibliography of slang sources from the early modern period to the present day. Other works by Jonathon Green include The Stories of Slang: Language at Its Most Human (2017); Slang: A Very Short Introduction (2016); Language! Five Hundred Years of the Vulgar Tongue (2014); and Odd Job Man: Some Confessions of a Slang Lexicographer (2014).