Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Polish sztywny
Proto-Germanic *stīfaz (derived)
Middle High German stīf (borrowed)
Middle Low German stīf (borrowed)
Proto-Indo-European *steypós (derived)

Polish sztywniak (affix)
Polish sztywnieć (affix)