Etymon
pie-h2elnos-protogermanic-allaz-protogermanic-ala-protowest-germanic-ala-old-english-l-middle-english-all-english-all-protoindoeuropean-ke-protoindoeuropean-kom-protoitalic-kom-protoitalic-kom-latin-con-protoindoeuropean-upo-protoitalic-supo-latin-sub-latin-sub-protoindoeuropean-h1emder
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.