Irish úr

← Proto-Celtic *ɸūros (inherited)

← Proto-Indo-European *pewH- (root)

← Proto-Indo-European *puHrós (inherited)

← Latin pūrus (cognate)

← Middle Irish úr (inherited)

← Old Irish úr (inherited)

→ Welsh ir (cognate)

→ Irish úrleathar (affix)

→ Irish úraigh (affix)

→ Irish úrscéal (affix)

→ Cornish yr (cognate)