Senedd

Etymology tree
Proto-Indo-European *sem-der.?
Proto-Hellenic *ksún
Ancient Greek σύν (sún)
Ancient Greek σῠν- (sŭn-)
Proto-Indo-European *sed-der.
Proto-Indo-European *sodós?
Proto-Hellenic *hodós
Ancient Greek ὁδός (hodós)
Ancient Greek σῠ́νοδος (sŭ́nodos)bor.
Latin synodusbor.
Middle Welsh seneð
Welsh senedd
Welsh Seneddubor.
English Senedd
Unadapted borrowing from Welsh Senedd, from senedd, from Middle Welsh seneð, borrowed from Latin synodus. Doublet of synod. Compare Middle Breton senez (“synod”) and phonetically Old English senoþ, Middle High German senet. Later likely influenced by or merged with Latin senātus.