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Swedish öppen
Danish åben (mention)
German offen (mention)
English open (mention)
West Frisian iepen (mention)
Proto-Germanic *upanaz (inherited)
Old Swedish ypin (inherited)
Old Swedish øppin (mention)
Icelandic opinn (mention)
Low German apen (mention)
Low German open (mention)
Dutch open (mention)
Norwegian Nynorsk open (mention)
Old Norse opinn (inherited)

English open (cognate)
Old English open (cognate)
Danish åben (cognate)
German offen (cognate)
Westrobothnian yppe (cognate)
Icelandic opinn (mention)
Norwegian Bokmål åpen (cognate)
Norwegian Nynorsk open (cognate)
Swedish öppna (affix)
Swedish offentlig (cognate)
Swedish öppenhjärtig (affix)
Swedish öppenvård (compound)