Siththan

Part of speech: conjunction, adverb

Definitions

1. Archaic term meaning from that point onward or afterwards ; used to link an event to a later time when introducing a clause
2. An old word for later or since then ; an archaic conjunction meaning from the moment that something happened
3. Meaning afterward or since that moment in older English ; a conjunction marking the time from which something has continued

Etymology: Before "since" was a common English preposition, Old English speakers used "siððan" (also spelled "siþþan") to mean "after that" or "afterwards." It was built from "sīþ," an old word for "time" or "journey," and "þan," "then." Pronounced with the "th" sounds of the period, it was the everyday way to mark what came after one event and before another. Its Middle English descendant, "sithen" or "sithence," kept that sense and also took on the sense "from that time," which is where "since" gets its modern meaning of a starting point in time. The longer form dropped out of common use, leaving "since" as the surviving shortened version, which still carries the same temporal sense it had in the earlier forms.