EN
This paper presents the results and clarifies the scientific contribution of A. Habovštiak’s confrontational Slavic research focused on the lexicon Slovak dialects in the Slavic context, which he presented in numerous articles published in domestic and foreign scientific journals and proceedings and later in a summarized form in the monograph Zo slovensko-slovanských lexikálnych vzťahov (so zreteľom na lingvistickú geografiu) [From Slovak-Slavic Lexical Relations (with Regard to Linguistic Geography)] from 1993. With an emphasis on the Slovak-Slavic context, we can summarise that the author significantly contributed to the discussions about defining the place of Slovak in the group of Slavic languages, shed light on its West Slavic character and its relations with South Slavic and East Slavic languages, pointed to the peculiar development of the Slovak lexical fund and on the special continuity of the Slovak dialect lexicon with its Proto-Slavic linguistic origin.