Etymology tree Latin intellegō Proto-Indo-European *-tus Proto-Italic *-tus Latin -tus Latin intellēctus Proto-Indo-European *h₂el-der.? Proto-Italic *-ālis Latin -ālis Latin intellēctuālisbor. Proto-Indo-European *-nós Proto-Balto-Slavic *-inas Proto-Slavic *-ьnъ Old Polish -ny Polish -ny Polish intelektualny Proto-Slavic *-e Old Polish -ie Polish -ie Polish intelektualnie From intelektualny +…