This book explores for the first time the relation between Atticist lexicography and the pronunciation of Greek, an aspect of Atticism that has never been studied thouroughly before. It examines the ideas of the Atticist about what Greek should sound like, drawing on Atticist lexicography as the main source of information on the special pronunciation of the Atticist. The book addresses all scholars with an interest in Atticism, Greek in the Imperial period, and linguistic purism more in general. It sheds new light on an aspect of Atticism that is otherwise poorly attested, and complements the existiting study on later Greek and the impact of Atticism in the history of the Greek language.