The story
- Proto-Indo-European · derived from*hₐet-“to go”
- Proto-Brythonic · derived from*ador
- Proto-Indo-European · derived from*h₁éh₁t-r̥ ~ *h₁h₁t-éns“lung; internal organ”
- Proto-Germanic · derived from*ēþrǭ“rivulet; (anatomy) vein”
- Old English · derived fromǣdre“channel for liquids; river; (anatomy) artery or vein; sinew”
- Proto-Indo-European · derived from*dʰewbʰ-“deep”
- Proto-Indo-European · derived from*wasdʰos“long; wide”
- Irish · derived fromfad“length”
- English todayBlackadder
PIE word *wasdʰos From black + a second element, possibly derived from one of the following: * From Irish fad (“length”), fada (“long”, adjective) (ultimately from Proto-Indo-European *wasdʰos (“long; wide”)) + dobhar (“moisture; sea; water”) (ultimately from Proto-Indo-European *dʰewbʰ- (“deep”)), referring to a long river. * From Old English ǣdre (“channel for liquids; river; (anatomy) artery or vein; sinew”), from Proto-Germanic *ēþrǭ (“rivulet; (anatomy) vein”), possibly from Proto-Indo-European *h₁éh₁t-r̥ ~ *h₁h₁t-éns (“lung; internal organ”), from *h₁eh₁t- (“breath; to breathe”) + *-r̥ (suffix forming nouns). However, this etymology has been doubted as it has been suggested that the long initial vowel in Old English would have been preserved in English and Scots. * From Proto-Brythonic *ador or *edir (“(possibly) name of a river”), possibly ultimately from Proto-Indo-European *hₐet- (“to go”) + *-r̥. The surname is from the river and the adjacent Blackadder House.
Words from the same roots
Proto-Indo-European*dʰewbʰ- all →
Etymology from Wiktionary, CC BY-SA 4.0.