Middle Irish ó

← Proto-Celtic *ausos (inherited)

← English ear (cognate)

← Scottish Gaelic bho (link)

← Manx voish (link)

← Proto-Indo-European *h₂ṓws (inherited)

← Latin auris (cognate)

← Old Irish áu (inherited)

← Old Irish úa (inherited)

→ Breton eontr (cognate)

→ Welsh ewythr (cognate)

→ Scottish Gaelic o (inherited)

→ Manx veih (inherited)

→ Manx voish (inherited)

→ Old Irish amnair (cognate)