svými
svými is the instrumental plural form of the Czech possessive determiner svůj, used to express possession by the subject in phrases that require the instrumental case. It translates roughly as “one’s own” and is used to indicate that the things belong to the subject of the clause. The form accompanies plural nouns in the instrumental case and agrees with the possessor rather than the possessed noun.
In use, svými marks ownership by the subject and appears before a plural noun in instrumental position.
Etymology and related forms: svůj derives from Proto-Slavic *svojъ* and has cognates in other Slavic languages,