Welsh adar

← Proto-Celtic *ɸetnos (inherited)

← Welsh edn (mention)

← Welsh adain (mention)

← Welsh ehedeg (mention)

← English feather (cognate)

← Proto-Indo-European *péth₂r̥ (inherited)

← Proto-Indo-European *pth₂-éns (mention)

← Latin penna (cognate)

← Old Welsh atar (inherited)

← Old Irish ette (cognate)

→ Welsh aderyn (affix)

→ Welsh adara (affix)

→ Welsh hedfan (mention)

→ Welsh edn (mention)

→ Welsh adain (mention)

→ Welsh adarydd (affix)

→ Welsh adardy (compound)

→ Welsh adareg (affix)

→ Welsh adargi (affix)

→ Welsh adarwr (affix)