Irish súil

← Breton heol (cognate)

← Proto-Celtic *sūle (inherited)

← Proto-Celtic *sūlos (mention)

← Proto-Celtic *sāwol (mention)

← Welsh haul (cognate)

← Proto-Indo-European *sóh₂wl̥ (inherited)

← Primitive Irish *sūli (inherited)

← Old Irish súil (inherited)

→ Breton sellout (cognate)

→ Welsh syllu (cognate)

→ Irish aonsúileach (affix)

→ Irish mórshúil (affix)

→ Irish sreangshúil (affix)

→ Irish púicshúileach (affix)

→ Irish déshúileach (affix)

→ Irish claonsúil (affix)

→ Irish beoshúileach (affix)

→ Irish súil-lia (affix)

→ Irish súilín (affix)

→ Irish súilaithne (affix)

→ Scottish Gaelic seall (cognate)

→ Cornish howl (cognate)

→ Albanian sy (cognate)