Welsh diogel

← Breton diogel (cognate)

← Proto-Celtic *uɸo- (inherited)

← Proto-Celtic *kel- (mention)

← Welsh di- (prefix)

← Welsh gogel (prefix)

← Welsh (prefix)

← Proto-Indo-European *ḱel- (derived)

← Cornish diogel (cognate)

→ Welsh diogelwch (affix)

→ Welsh diogelu (affix)