Abstract
This chapter addresses a series of Greek loan nouns that had previously been integrated into Latin and which may, in some cases, have entered Romanesco via an intermediate step through Tuscan/Italian. The study of these particular nouns yields insights into the system of inflectional classes and grammatical genders - and their interaction - contributing thus to the understanding of this variety’s morphological and morphosyntactic system in diachrony. In particular, I conclude that the inflectional class -a/-i entered Romanesco only from the 15th century onwards through a particular group of Graecisms.