Cornish krev

← Breton kreñv (cognate)

← Proto-Brythonic *krɨβ̃ (inherited)

← Proto-Celtic *kriɸmos (inherited)

← Middle Cornish creff (inherited)

← Middle Cornish cref (mention)

← Welsh cryf (cognate)

← Proto-Indo-European *krep- (root)

← Old Cornish crif (inherited)

→ Breton kreñv (cognate)

→ Welsh cryf (cognate)