príbuzný
Príbuzný is a term used in Czech and Slovak to designate a person who is related to someone by blood or by marriage. As a noun, it refers to a relative; the feminine form is príbuzná, and the plural forms are príbuzní (masculine or mixed gender) and príbuzné (feminine). As an adjective, príbuzný means related or kin, and it is used to describe kinship or relatedness, e.g., príbuzný vztah.
The concept covers a wide range of kin, from immediate family such as parents, siblings, and children
In legal and genealogical contexts, the degree of príbuznost is used to describe how closely two people
Etymology: príbuzný derives from the Slavic roots associated with kinship, with cognates in other Slavic languages.