Old Irish gíall

← Breton gouestl (cognate)

← Proto-Celtic *gēstlos (inherited)

← Welsh gwystl (cognate)

← Proto-Indo-European *gʰeystlo- (inherited)

← Proto-Indo-European *gʰeydʰ- (mention)

← Cornish gostel (cognate)

→ Irish giall (inherited)

→ Irish giall (inherited)

→ Irish géill (mention)

→ Irish giallnas (mention)

→ Irish giallacht (mention)

→ Scottish Gaelic giall (inherited)

→ Scottish Gaelic giall (inherited)