Old Irish bél

← Proto-Celtic *wewlos (inherited)

← Welsh gwefl (cognate)

← Cornish gwevel (cognate)

→ Irish Béarla (mention)

→ Irish béal (inherited)

→ Irish beola (mention)

→ Scottish Gaelic bile (inherited)

→ Scottish Gaelic beul (inherited)

→ Manx beeal (inherited)

→ Manx Baarle (mention)

→ Old Irish bélrae (affix)

→ Old Irish bélmar (suffix)