Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old Norse eigi
Proto-Germanic *aigô (inherited)
Old Swedish ey (link)
Proto-Indo-European *h₂eyḱ- (root)
Icelandic ei (link)
Old Norse ne eigi (mention)
Old Norse ekki (link)

Danish ej (inherited)
Finnish ei (cognate)
Norwegian Nynorsk ei (inherited)
Norn ye (derived)
Swedish ej (inherited)