The review of the book by T.N. Ushakova “The nature of the meaningfulness of the word” considered the main idea of the book – the ratio of subjective and objective components of speech, the external form of the word and its subjective content, their mutual complementarity and the irreducibility of the sum to a single whole. Its evidences based on the author’s analysis of a large volume of literary and experimental data, including the work of the author of the book, T.N. Ushakova, were analyzed. It is emphasized that the book is a fundamental work that summarizes experimental data and their deep understanding, allowing the author to formulate a new psychophysiological concept of speech formation and language acquisition. This is an interdisciplinary study covering different aspects of speech behavior from the positions of psychology, physiology, linguistics, psychophysiology and philosophy, starting from the early vocalizations of infants and their motor activity, and ending with the processes of language creativity in adult. Review noted that expanding the problem of studying language and speech, T.N. Ushakova turns to neuropsychological and psychophysiological studies of verbal phenomena, describing approaches aimed at studying their mechanisms; offers a behavioral scheme for the formation of meaningful behavior – from its origin in infancy to its implementation in older age. The book contains three logically connected parts – Background on psychological and psycholinguistic studies of words; The origin and development of the phenomenon of meaningfulness; Language and word creation. The content of each part leads to the perception of increasingly information presented in the next chapter. The logical conclusion of the author’s many years of research is the concept of language, which is new in linguistics, outlined in the book. The book is interesting for specialists in various fields of knowledge – philologists, linguists, psychologists, psychophysiologists, philosophers.