←
Proto-Celtic *sedos (inherited)
←
Proto-Celtic *sīdos (mention)
←
Proto-Celtic *sī (inherited)
←
Proto-Indo-European *sēds (inherited)
←
Proto-Indo-European *sed- (mention)
←
Proto-Indo-European *sih₂ (inherited)
←
Middle Irish side (inherited)
←
Old Irish síd (inherited)
←
Old Irish sí (inherited)