Where does “uptil” come from?

uptil (English) comes from English til, from Middle English til, from Old Norse til, from Proto-Germanic til, from Proto-Germanic tilą, from Proto-Indo-European deh₂y-, from Proto-Indo-European deh₂- — to share, divide.

Ancestry of “uptil”, step by step

uptil traces back through two separate lines of ancestry.

via English til

StepLanguageWordMeaning
1Englishtiluntil, till; ~ to: as far as; down to; up to,...
2Middle Englishtiluntil, till; as far as; down to; up to, until
3Old Norsetilto, towards
4Proto-Germanictilto, towards; to, toward
5Proto-Germanictiląplanned point in time
6Proto-Indo-Europeandeh₂y-to share, divide
7Proto-Indo-Europeandeh₂-to share, divide

via English up

StepLanguageWordMeaning
1EnglishupAway from the surface of the Earth or other...
2Middle Englishupto a vertical axis
3Old Englishuppup; upstairs
4Proto-West Germanic*upp
Every word from Proto-Indo-European deh₂-Every word from Proto-Indo-European deh₂y-Every word from Proto-Germanic tilą