This is a dictionary of Nafsan, the language spoken in Vanuatu in the south of Efate Island in the villages of Erakor, Pango, and Eratap. Nafsan is one of 130 distinct languages spoken in Vanuatu. Over several decades, linguist Nicholas Thieberger worked in close collaboration with the Erakor community to record this unique language and to refine its written presentation. The resulting publication offers insight into the diversity of meanings available to speakers of Nafsan, providing some 3,400 senses for Nafsan words and an English-Nafsan finderlist. In addition, the book gives an overview of the Nafsan sound system, provides a list of existing literature on the language dating back to early missionary translations, and includes maps of Efate locating nearly 200 place names. Readers will also find South Efate cultural knowledge embedded in the explanations of the Nafsan words and their usages. A welcome companion to Thieberger's A Grammar of South Efate (2006), this book complements and significantly augments other multimedia resources made available online by the author.