Etymon
lat-sucus-protoindoeuropean-nos-protoitalic-nos-latin-num-latin-sucinum-latin-succinum-protoindoeuropean-ikos-protoitalic-ikos-latin-icuslbor
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.