Etymon
lat-duenelos-vulgar-latin-bellus-protoindoeuropean-teh2-protoindoeuropean-ts-protoindoeuropean-teh2ts-protoitalic-tats-vulgar-latin-tas-vulgar-latin-bellitatem-anglonorman-biautebor
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.