Polish Dunaj

← Proto-Celtic *Dānowyos (derived)

← Proto-Celtic *Dānu (mention)

← Proto-Germanic *Dōnawjaz (derived)

← Gothic *𐌳𐍉𐌽𐌰𐍅𐌹 (derived)

← Proto-Indo-European *déh₂nu (derived)

← Proto-Indo-European *dʰenh₂- (mention)

← Latin Danubius (cognate)

← Proto-Slavic *Dunavь (inherited)

→ Polish dunajski (suffix)