Abstract: This article is devoted explores the lexicographic description of functional words. The object of this research is the lexicographic interpretation of functional words. The subject is the interpretations of the particle “just” in various types of dictionaries, namely explanatory and etymological dictionaries of the Russian language, as well as dictionaries developed foreign scholars. The goal is set to systematize the existing information on the particle “just” in the dictionaries, as well as present the material for complementing its lexical entry based on the analysis of factual material in order to create a comprehensive portrait of this unit. For achieving the set goal, the article employs descriptive, comparative, and analytical methods. Comparison of the dictionary data allows determining the similarities and differences in interpretation of the word “just”, establish the invariant meaning of this particle, outline the discrepancies in classification of the types of its use. Leaning on the analysis of factual material of the particle “just” in relation to its syntagmatic and paradigmatic characteristics, the author offers a new interpretation of the meanings of this particle and division of modifications of its meanings. The novelty of this work consists in the proposed material for complementing the lexical entry of the particle “just”.