Where does “thursday” come from?
thursday (English) comes from Middle English Thursday, from Old English þursdæġ, from Proto-Germanic *Þunras dag, from Latin dies iovis, from Latin diēs, from Proto-Italic djēm, from Proto-Italic *djous, from Proto-Indo-European dyḗws — to be bright; sky, heaven.
Ancestry of “thursday”, step by step