Resignation/Schism #etymology

Whether it’s for the sake of his party’s future electability, the consequences of his policies, or the result of a growing schism in his parliamentary caucus, Canadian Prime Minister Justin Trudeau has finally announced his resignation. I’ll leave you to decide the reason, and you can also decide for yourself about this etymology. Resignation and resign both come through Old French, ultimately from Latin resignare “to unseal, open; to annul, cancel, invalidate, rescind, destroy”, from signum “mark, token, sign, indication, proof”. The further etymology is uncertain, but there are three possibilities. First, signum might come from the Proto-Indo-European root *sag- “to seek out”, also the source of the words seek (from Old English secan “to seek”) and sake (from Old English sacu “lawsuit, quarrel”, literally “a seeking”). Second, signum might come from the PIE root *sekw- “to follow” (from the notion of a mark or standard that one follows), which also led to the Latin word sequi “to follow”, which when combined with the prefix con- “with, together” produced consequi “to follow after” and eventually English consequence. Or third, signum might come the PIE root *sek- “to cut”, from the idea that a sign is a mark that’s been cut into something, and this root has the further extended form *skei- “to cut, split”, which had the further extended form *skeid- with the suffixed zero-grade form *sk(h)id-yo- that produced Greek skhizein “to split” and skhisma “cleft, division”, which came into English through Church Latin as schism.