Etymon
enm-sexe-english-sex-protoindoeuropean-kos-protogermanic-gaz-protowest-germanic-g-old-english-ig-middle-english-y-english-y-english-sexy-blend-english-transexy-blend-of-transgender-sexy
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.