Where does “þa” come from?

þa (Old Swedish) comes from Old Norse þá, from Germanic *þan, from Proto-Germanic þan, from Proto-Germanic þam, from Proto-Indo-European tóm, from Proto-Indo-European só — this; that.

Ancestry of “þa”, step by step

StepLanguageWordMeaning
1Old Norseþáthen, at that time; that; those
2Germanic*þan—
3Proto-Germanicþanthen, at that time
4Proto-Germanicþam—
5Proto-Indo-Europeantóm—
6Proto-Indo-Europeansóthis; that

Words derived from “þa”

Every word from Proto-Indo-European só →Every word from Proto-Indo-European tóm →Every word from Proto-Germanic þam →