The Dictionary of Old English (DOE) is a dictionary of the Old English language, published by the Centre for Medieval Studies, University of Toronto, under the direction of Angus Cameron, Ashley Crandell Amos, and Antonette diPaolo Healey. It complements the Oxford English Dictionary's comprehensive survey of modern English and the Middle English Dictionary's comprehensive survey of Middle English.
The dictionary is still under production. As of March 2015[update] the entries for 8 of the 24 letters of the Old English alphabet have been published, and over 60% of the total entries have been written.
The dictionary has made extensive use of digital technology, and is based on a corpus of at least one copy of every known surviving text written in Old English.
The dictionary was conceived in 1968 as a replacement for the Bosworth–Toller Anglo-Saxon Dictionary, which had been compiled at a time when both the study of the Old English language and lexicographical techniques were less advanced. From the outset, the editors were interested in the potential application of computer technology to the task of compiling the dictionary, and in basing the dictionary text on a corpus. A dictionary plan was published in 1973. It was originally anticipated that work on the dictionary would begin in 1976 and the dictionary would begin appearing in fascicles shortly thereafter; however, it was not until 1986 that the first fascicle was published, covering words beginning with the letter D. New fascicles have appeared every few years since then, most recently reaching G in 2008.