Where does “dunajski” come from?
dunajski (Polish) comes from Polish Dunaj, from Proto-Slavic Dunavь, from Gothic 𐌳𐍉𐌽𐌰𐍅𐌹, from Proto-Germanic Dōnawjaz, from Proto-Celtic Dānowyos, from Proto-Celtic Dānu, from Proto-Indo-European dʰenh₂- — to set in motion; to flow.
dunajski (Polish): Danubian
Ancestry of “dunajski”, step by step