Breton krec'h

← Proto-Brythonic *krɨx (inherited)

← Proto-Brythonic *knox (inherited)

← Gaulish crixsos (cognate)

← Proto-Celtic *krikso- (inherited)

← Proto-Celtic *knokkos (inherited)

← Welsh crych (cognate)

← Welsh cnwch (cognate)

← Irish cnoc (cognate)

← Proto-Indo-European *kripso- (inherited)

← Cornish crygh (cognate)

← Latin crispus (cognate)

← Old Breton cnoch (inherited)

← Middle Breton crech (inherited)

← Middle Breton knech (inherited)