Where does “syne” come from?

syne (Middle English) comes from Middle English sithen, from Old English siþþan, from Old English sīþ, from Proto-West Germanic sinþ, from Proto-Germanic sinþaz, from Proto-Indo-European sent-, from Proto-Indo-European h₁es- — to be.

Ancestry of “syne”, step by step

StepLanguageWordMeaning
1Middle EnglishsithenFrom or since the time that; since then, after...
2Old Englishsiþþanafterwards, subsequently; since; ago, since
3Old Englishsīþjourney, movement, trip, point in time, occasion;...
4Proto-West Germanicsinþjourney, way, path; time, occasion
5Proto-Germanicsinþazjourney, way, path
6Proto-Indo-Europeansent-to head for, to go, to travel; to feel
7Proto-Indo-Europeanh₁es-to be

Words derived from “syne

Every word from Proto-Indo-European h₁es-Every word from Proto-Indo-European sent-Every word from Proto-Germanic sinþaz