The monograph ('Free-morphemeness in Slovene') aims to demonstrate which words function as free morphemes and to which content words they are semantically and syntactically bound, in addition to determining their role in the Slovene language. The current work contains the following chapters: Free-morphemeness, Free-morphemeness between the lexeme and the sentence, Free-morphemeness as the grammar component of the dictionary: the dictionary representation of free-morphemeness, and the Annex: reference articles. The titles guide the reader from theory to practice, which is why the base text is enriched with reference articles that provide in depth breakdowns of individual phenomena and problematic areas. Free-morphemeness to some extent weakens the limits of the lexeme and thus significantly influences the semantic and syntactic relationships between lexemes and, on this basis, co-shapes and co-creates the Slovene syntax.