The systematization and classification of neolexemes in Mykola Vingranovkyi’s poetry prove that the author used them for creating his own literary idiostyle. Among such kinds of words, the most widespread are formed by compounding the stems. The other variants of the poet’s words are formed by suffixation and also prefixal-suffixal derivatives. Much less common is to find neologisms formed by only prefixation. In the article, the researcher studies different types of occasional lexemes, analysis of which had been based on the aforementioned classification. In this case, the writer’s position is very important. The author shows how the psychoanalytical aspect of the poet’s outlook is present in his linguistic presentation of the world.