The purpose of the study is to identify, based on the material of substantive vocabulary, the core of the nominative field of the concept of FRAUDSTER in the framework of modeling the cognitive structure of the situation of fraudulent interaction. The scientific novelty of the work lies in the fact that in it the phenomenon of fraud is studied for the first time in the aspect of its linguocognitive interpretation – as a conceptual field with a propositional structure. The article defines and analyzes for the first time the lexical and semantic paradigms of nominations of persons involved in a fraudulent act. As a result, a variety of substances objectifying the phenomenon of fraud has been revealed. The high productivity of the fraudster's designations by type of activity in the modern media space was noted. A wide range of multilevel linguistic units has been found, marking the "falsity", "imaginary" social status of a fraudster. The active updating of the composition of lexical and semantic groups under the influence of extralinguistic factors, in particular the processes of digitalization of modern society, has been revealed. For the first time, collocations reflecting the associative rapprochement of a fraudster with other offenders in the Russian language consciousness are analyzed. The high pragmatic potential of the substantives forming the nominative field of the concept of FRAUDSTER is substantiated.