This lexicon provides as comprehensive as possible a list of explicit etymologies of Latin words found in Latin and Greek writers from the time of Varro to Isidore of Seville. Robert Maltby has extracted from glossaries and scholia as well as the standard ancient etymological source books. His policy of quoting extensively, rather than summarizing, reveals the relationships between the various sources and the reasoning behind many of their etymologies. It amounts to a major work of reference.