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In a sentence
On je môj príbuzný.
He is my relative.
Ona je moja príbuzná.
She is my relative.
Tom je presvedčený, že je mojím príbuzným.
Tom is convinced that he's a relative of mine.
Príbuzný z Košíc nás navštívil cez víkend.
A relative from Košice visited us over the weekend.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Includes Tatoeba example sentences when present.
Full attribution on References.