Old Irish noídiu

← Proto-Celtic *newēdyū (inherited)

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

→ Irish naíon (mention)

→ Irish naíonán (mention)

→ Irish naí (inherited)

→ Scottish Gaelic naoidhean (mention)

→ Scottish Gaelic naoidheanta (mention)

→ Old Irish noídenacht (suffix)

→ Old Irish noídenda (suffix)