Etymon
pie-ne-protoindoeuropean-n-protoitalic-n-latin-in-protoindoeuropean-ke-protoindoeuropean-kom-protoitalic-kom-protoitalic-kom-latin-con-protoindoeuropean-per-protoindoeuropean-preh2-protoindoeuropean-i-protoindoeuropean-preh2i-protoitalic-prai-protoitalic-prai-protoindoeuropean-ghed-protoindoeuropean-ne-protoindoeuropean-ti-protoindoeuropean-ghnedti-protoitalic-hendo-protoitalic-praiendo-latin-prehendo-latin-comprehendo-protoindoeuropean-ter-protoindoeuropean-dhlom-protoindoeuropean-dhlis-protoitalic-lis-latin-bilis-latin-comprehensibilis-latin-incomprehensibilisbor
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.