Old Irish -igidir

← Proto-Celtic *-sagyetor (inherited)

← Welsh -hau (cognate)

← Proto-Indo-European *seh₂g- (root)

→ Welsh -hau (cognate)

→ Irish -igh (inherited)

→ Scottish Gaelic -ich (inherited)

→ Manx -ee (inherited)

→ Old Irish adamraigedar (affix)

→ Old Irish béoigidir (affix)

→ Old Irish feidligidir (affix)

→ Old Irish fíríanaigidir (affix)

→ Old Irish grádaigidir (affix)

→ Old Irish saigid (link)

→ Old Irish suidigidir (affix)

→ Old Irish foilsigidir (affix)

→ Old Irish dechraigidir (affix)

→ Old Irish fercaigidir (affix)

→ Old Irish adilgnigidir (affix)

→ Old Irish étaigidir (affix)

→ Old Irish airigidir (affix)