myEtymology.com: English etymology of birthday

Etymology of the English word birthday

the English word birthday

derived from the English word birth

derived from the Old Norse word byrth

derived from the Proto-Indo-European root *bher-

derived from the Proto-Germanic root *gaburthis

derived from the English word day

derived from the English word dag

derived from the Proto-Indo-European root *dheigh-

derived from the Proto-Germanic root *dagaz