The collection of short stories Pobune was mainly analyzed from a literary theoretical perspective. The paper deals with the linguistic analysis of phrasemes modifications and the expansion of phrasemes in the mentioned work. The paper distinguishes between phrasemes modifications and phrasemes variations. Since the term phrasemes in modern phraseology is interpreted in different ways, this paper will analyze those phrasemes that have at least two autosemantic words in their composition, at least one of which has a transferred meaning. In the excerpted corpus, no author's modifications of idioms resulting from the reduction or condensation of certain lexemes were found, but only idioms created by expanding/adding lexemes that affected the modified meanings of those idioms. The aim of the work is the analysis of the author's phrasemes, finding synonymous phrasemes in consulted sources and giving meaning to those author's phrasemes that have not been recorded in both phraseological and general dictionaries of the Bosnian, Croatian and Serbian languages, but also in other consulted sources. Structurally and semantically modified phrasemes are found in the analyzed corpus. The recorded examples of idioms in the five short stories were used only once, and their unrepeatability also affects their more expressive value. The analyzed examples of the author's modifications of phrasemes are an indicator of the writer's ability to make recorded phrasemes more expressive, to change their meanings, and to construct new phrasemes that were not recorded.