This dictionary gives the origins of some 20,000 items from the modern English vocabulary, discussing them in groups that make clear the connections between words derived by a variety of routes from originally common stock. As well as giving the answers to questions about the derivation of individual words, it is a fascinating book to browse through, since every page points out links with other entries. It is easy to pursue such trails as the longer articles are written as continuous prose clearly divided up by means of numbered paragraphs and subheadings, and there is a careful system of cross-references. In addition to the main A-Z listing, there are extensive lists of prefixes, suffixes, and elements used in the creation of new vocabulary.