Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Icelandic undir
Proto-Germanic *under (inherited)
Old Norse undir (inherited)

Icelandic und (mention)
Icelandic undirflokkur (compound)
Icelandic undirætt (prefix)
Icelandic undirheiti (mention)
Icelandic undirættbálkur (prefix)
Icelandic undirfylking (prefix)
Icelandic undirlag (affix)
Icelandic undirlendi (affix)
Icelandic undirforrit (compound)
Icelandic undirbúinn (compound)