EN
In the presented paper, we pay attention to the non-standardized names of caves and abysses (speleonyms) located in the territory of the Slovak Karst National Park. The aim of the study is to present lingual and extralingual analysis of interonymic contacts in the creation process of speleonyms in the described area. The introductory part of the paper offers a theoretical overview of how the term transonymisation is currently understood in Slavic onomastics.