Formation of adverbs of manner in the Old Russian language (as exemplified by literary texts of the 6th-16th centuries)

The study proves that the prefixal method is the main way of forming adverbs of manner in the Old Russian language. The teaching of language historians about the formation of Old Russian adverbs is based on a stable idea about the ongoing or incomplete adverbialization of prepositional-substantive or prepositional-attributive combinations. This viewpoint on adverbs affected the historical coverage of this part of speech not only in academic research but also in educational literature. Adverbs of manner, which are integral grammatical and lexical components of the Russian language, have not yet been a research subject.