köken: Etymology tree Proto-Indo-European *h₁én Proto-Italic *en Proto-Italic *en- Latin in- Proto-Indo-European *perh₃-der. Latin parō Latin imperōder. Latin imperium Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Latin imperiālisbor. Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Polish -ny Polish -ny Polish imperialny From Latin imperiālis + Polish -ny.