Properly, the same as ad (used as a preposition, adverb or conjunction; especially with a preposition); as far (or long, or much) as, whether of space (even unto) or time (during, while, until) or degree (equally with)
against, and, as, at, before, by (that), even (to), for(-asmuch as), (hither-)to, + how long, into, as long (much) as, (so) that, till, toward, until, when, while, (+ as) yet.