Old Irish claideb

← Breton klezeñv (cognate)

← Proto-Celtic *kladiwos (inherited)

← Welsh cleddyf (cognate)

→ Breton klezeñv (cognate)

→ Welsh cleddyf (cognate)

→ Irish claíomh (inherited)

→ Scottish Gaelic claidheamh (inherited)

→ Manx cliwe (inherited)

→ Latin gladius (cognate)