The primary aim of the project is to explore the morphological and syntactic properties of non-finite verbal forms in certain ancient Indo-European languages. Non-finite verb forms, which include infinitives, participles, verbal adjectives, verbal nouns and gerunds, are “mixed” categories in the sense that they display features and behaviour typical of at least two lexical classes (i.e., the verb, on the one hand, and the noun, adjective or adverb on the other).