The aim of the masterʼs thesis is to point out the semantic changes and functional shifts of the expression akorát in a Czech language sentence. The expression akorát is used in spoken language and it can occur in adverbial, particle or conjunctive function. We can, while considering the meaning of akorát, mention expressions such as precisely (přesně), only (jen) or but (jenže) as synonymous. At the same time, the expression has a few different meanings which can be variously intertwined in different functions. The thesis is based on definitions of function and meaning given in J. Bauerʼs and B. Štěpánkováʼs works and also on functional sentence perspective as theory. The aforementioned theoretical basis helps us define the expression akorát as an actualizer which can, next to its primary function, have a secondary function as well. This is often connected to its particle and conjunctive function. Sentence analysis from SYN2015 and ORAL2013 corpora has shown that expression akorát as an actualizer can change the meaning of the sentence if its position in word order is changed. The 39 importance of how the expression is related to the verb is observed as well. Consequentially, the possibility of using the equivalent expression akorát že and translation equivalents in the Croatian language are commented. Some other questions, to which it is thought works should be devoted in the future, are considered.