Old Church Slavonic влькъ

← Proto-Indo-European *wĺ̥kʷos (inherited)

← Proto-Slavic *vьlkъ (inherited)

→ Old English wulf (cognate)

→ Old Church Slavonic вльчьць (suffix)

→ Old Persian 𐎺𐎼𐎣 (cognate)

→ Romanian Vulcan (derived)

→ Romanian Ulciug (affix)

→ Romanian Elciu (mention)

→ Romanian Vicea (mention)

→ Sanskrit वृक (cognate)