Old Irish reithid

← Proto-Celtic *reteti (inherited)

← Proto-Indo-European *Hret- (root)

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

→ Welsh rhedeg (cognate)

→ Irish rith (inherited)

→ Irish reithíocht (derived)

→ Irish reith (derived)

→ Scottish Gaelic ruith (inherited)

→ Manx roie (inherited)

→ Old Irish foreith (affix)

→ Old Irish roithid (mention)

→ Old Irish arreith (affix)

→ Old Irish doetarrat (affix)

→ Old Irish toncomrit (affix)

→ Old Irish comthururas (mention)

→ Old Irish dofúarat (affix)

→ Old Irish doraid (mention)