This is the first modern edition and an essential tool for scholars of all aspects of the subject. This edition of the lexicon of the ancient Greek scholar Hesychius was begun by K. Latte and revised and completed by P. A. Hansen and I. C. Cunningham. The text with apparatus was published in four volumes between 1953 and 2020. This final volume contains additions and corrections to the eararlier four and three indexes (of authors cited, authors of related texts, and subjects). The lexicon is an important source for ancient Greek vocabulary, grammar, history and literature.