Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Welsh caeth
Proto-Brythonic *kaɨθ (inherited)
Proto-Celtic *kaxtos (inherited)
Welsh canu caeth (link)
Welsh caeth i'r tŷ (link)
Welsh caethiwed (link)
Welsh caethiwo (link)
Welsh caethwas (link)
Welsh cafodd (alter)
Proto-Indo-European *keh₂p- (root)
Proto-Indo-European *kh₂ptós (inherited)
Old Welsh kaeth (inherited)
Old Welsh kaet (mention)
Old Welsh cahet (mention)
Old Welsh cayt (mention)

Old English hæft (cognate)
Welsh cas (alter)
German -haft (cognate)
French chétif (cognate)