Etymon
pie-weyh1-protoindoeuropean-wihros-protogermanic-weraz-protoindoeuropean-h2el-protoindoeuropean-h2eleti-protogermanic-alana-protoindoeuropean-tis-protogermanic-iz-protogermanic-aldiz-protogermanic-weraldiz-protowest-germanic-weraldi-old-english-weorold-middle-english-world-english-world-protoindoeuropean-dwoh1-protoindoeuropean-dwi-protoindoeuropean-dheh1-protoindoeuropean-h1weydhh1der
A dedicated page for this root is on the way — it will gather every word descended from it, sibling forms across daughter languages, and a branching map of the family tree.