Where does “бескрајан” come from?
бескрајан (Serbo-Croatian) comes from Serbo-Croatian бе̏скра̄ј, from Serbo-Croatian кра̑ј, from Proto-Slavic krajь, from Proto-Slavic krojiti, from Proto-Balto-Slavic krájīˀtei, from Proto-Indo-European kroyh₁-eye-ti, from Proto-Indo-European kroyh₁-, from Proto-Indo-European kroh₁y- — to sift, to separate.
бескрајан (Serbo-Croatian): endless
Ancestry of “бескрајан”, step by step