Etymon
lat-cumulus-protoindoeuropean-h2-protoindoeuropean-eh2-protoindoeuropean-yeti-protoindoeuropean-eh2yeti-protoitalic-ao-latin-o-latin-cumulo-latin-accumulo-protoindoeuropean-tis-protoindoeuropean-ho-protoindoeuropean-tiho-protoitalic-tio-latin-tio-latin-accumulatioder
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.