This monograph is devoted to the research of replacement words in Ukrainian language,
particularly those, characterized by morphological adverbs’ features. As a result of
the study the patterns of adverbs’ equivalents were established, a comprehensive analysis
of properties of their form of expression and internal organization was made, the typical
features and trends in their development were revealed, also the linguistic essence of
studied units, which are a sign of the dynamics of lexico-grammar system, was reflected.
The description of internal and external forms of adverbs’ equivalents revealed probable
ways to acquire the status of morphological parts in other sign structures of the transitional
nature of the Ukrainian language.