Etymon
pie-ne-protogermanic-ne-protoindoeuropean-is-protoindoeuropean-h1oynos-protogermanic-ainaz-protogermanic-nainaz-protowest-germanic-nain-old-english-nan-middle-english-non-old-english-nan-old-english-nan-middle-english-non-english-non-protoindoeuropean-h1egh-protoindoeuropean-s-protoindoeuropean-h1eghs-protoitalic-eks-latin-ex-latin-ex-protoindoeuropean-kap-protoindoeuropean-yeti-protoindoeuropean-kapyeti-protoitalic-kapjo-old-latin-kapio-latin-capio-latin-excipio-protoindoeuropean-tis-protoindoeuropean-ho-protoindoeuropean-tiho-protoitalic-tio-latin-tio-latin-exceptioder
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.