This book is an absolute novelty due to the systematic presence of key Neapolitan terms and phraseology translated into English and Italian. Etymons were rationally deduced taking into account strictly phonetic, syntactic, lexical, semantic and historical aspects without flights of fancy; the doubtful cases are indicated by a question mark. The result is convincing even for a Neapolitan person. Surely to the English-speaking people, interested in the Neapolitan and Neapolitan culture, this work should be a must.