Etymology tree Proto-Indo-European *upó Proto-Italic *supo Latin sub Latin sub- Proto-Indo-European *(H)yeh₁- Proto-Indo-European *(H)ih₁kyeti Proto-Italic *jīkjō Proto-Italic *jakjōder. Latin iaciō Latin subiciō Proto-Indo-European *-tis Proto-Indo-European *-Hō Proto-Indo-European *-tiHō Proto-Italic *-tiō Latin -tiō Latin subiectiōlbor. Polish subiekt Learned borrowing from Latin subiectiō.…