Where does “sinnes” come from?

sinnes (Middle English) comes from Middle English sithens, 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 “sinnes”, step by step

sinnes traces back through two separate lines of ancestry.

via Middle English sithens

StepLanguageWordMeaning
1Middle Englishsithens
2Middle EnglishsithenFrom or since the time that; since then, after...
3Old Englishsiþþanafterwards, subsequently; since; ago, since
4Old Englishsīþjourney, movement, trip, point in time, occasion;...
5Proto-West Germanicsinþjourney, way, path; time, occasion
6Proto-Germanicsinþazjourney, way, path
7Proto-Indo-Europeansent-to head for, to go, to travel; to feel
8Proto-Indo-Europeanh₁es-to be

via Middle English sithence

StepLanguageWordMeaning
1Middle Englishsithence
Every word from Proto-Indo-European h₁es-Every word from Proto-Indo-European sent-Every word from Proto-Germanic sinþaz
sinnes — Etymology, Origin & Word History | Etymology Explorer