Middle Irish bás

← Proto-Celtic *bāstom (inherited)

← Proto-Indo-European *gʷeh₂- (root)

← Proto-Indo-European *gʷeh₂- (derived)

← Proto-Indo-European *(s)gʷes- (mention)

← Old Irish bás (inherited)

→ Irish bás (inherited)

→ Irish uafás (mention)

→ Scottish Gaelic bàs (inherited)

→ Manx baase (inherited)

→ Middle Irish úathbás (affix)