Wednesday

The story

1. Latin · derived fromdiēs Mercuriī“day of Mercury”
2. Proto-West Germanic · inherited from*Wōdinas dag
3. Proto-West Germanic · inherited from*Wōdanas dag
4. Old English · inherited from*wēdnesdæġ“Wednesday”
5. Middle English · inherited fromWednesday
6. English todayWednesday

From Middle English Wednesday, from unattested Old English *wēdnesdæġ (“Wednesday”), synchronically an i-mutated form of attested wōdnesdæġ (itself from Proto-West Germanic *Wōdanas dag, its reflex Middle English Wodnesdei falling into disuse), from Proto-West Germanic *Wōdinas dag also attested in Old Frisian wednesdei and Middle Dutch wenesdach, equivalent to Woden + -s- + day. In any case, a calque (interpretātiō germānica) of Latin diēs Mercuriī (“day of Mercury”) and Koine Ancient Greek ἡμέρα (hēméra, “day”) Ἑρμοῦ (Hermoû, “of Hermes”), via an association of the god Odin (“Woden”) with Mercury and Hermes. See also Japanese 水曜日 (“Mercury's day”). Cognates Cognate with Scots Wadensday (“Wednesday”), Yola Wennesdei (“Wednesday”), West Frisian woansdei (“Wednesday”), Afrikaans Woensdag (“Wednesday”), Central Franconian Jodesdaach (“Wednesday”), Dutch, West Flemish woensdag (“Wednesday”), Dutch Low Saxon woensdag, woonsdag, wonsdag (“Wednesday”), German Wodenstag, Wotanstag (“Wednesday”), Low German Goonsdag, Woonsdag (“Wednesday”), Danish, Norwegian Bokmål, Norwegian Nynorsk, Swedish onsdag (“Wednesday”), Faroese ónsdagur (“Wednesday”), Icelandic óðinsdagur (“Wednesday”).