This is the first full account of the making of John Jamieson's Etymological Dictionary of the Scottish Language. The dictionary was published in two volumes in 1808, with a two-volume Supplement following in 1825. Lists of Scots words had been compiled before, but Jamieson's was the first complete dictionary of the language. It was a landmark in the development of historical lexicography and was an inspiration for later lexicographers, including Sir James Murray, founding editor of the OED.