"until," Old English til (Northumbrian), from Old Norse til "to, until," from Proto-Germanic *tilan (cf. Danish til, Old Frisian til "to, till," Gothic tils "convenient," German Ziel "limit, end, goal"). A common preposition in Scandinavian, probably originally the accusative case of a noun now lost except for Icelandic tili "scope," the noun used to express aim, direction, purpose (e.g. aldrtili "death," literally "end of life"). Also cf. German Ziel "end, limit, point aimed at, goal," and compare till (v.).