Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Danish sikker
Middle Low German seker (derived)
Proto-West Germanic *sikur (derived)
Latin sēcūrus (derived)
Old Saxon sikur (derived)
Old Saxon sikor (mention)

Danish sikre (link)
Danish usikker (prefix)
Danish sikkerhed (suffix)
Danish sikker sex (mention)
Danish stensikker (affix)
Icelandic sikker (derived)
Norwegian Bokmål sikker (derived)
Norwegian Nynorsk sikker (derived)