Middle Irish duille

← Breton delienn (cognate)

← Proto-Celtic *dolnyā (inherited)

← Proto-Celtic *dolyā (mention)

← Welsh dail (cognate)

← Ancient Greek θάλλω (cognate)

← Proto-Indo-European *dʰelh₁- (derived)

← Old Irish duilne (inherited)

→ Breton del (cognate)

→ Gaulish dula (cognate)

→ Welsh dail (cognate)

→ Middle English dile (cognate)

→ Irish duille (inherited)

→ Irish duilleachán (mention)

→ Scottish Gaelic duille (inherited)

→ Scottish Gaelic duilleachan (mention)

→ Ancient Greek θαλλός (cognate)

→ Latin folium (cognate)

→ Old Armenian դալար (cognate)