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Old Norse aldr
Old English ealdor (cognate)
Proto-Germanic *aldrą (inherited)
Old High German altar (cognate)
Proto-Indo-European *al- (derived)
Proto-Indo-European *h₂el- (mention)

Old English ealdor (cognate)
Danish alder (derived)
Danish aldrig (mention)
Faroese aldur (derived)
Westrobothnian åller (mention)
Old Danish aldrigh (mention)
Old Swedish alder (inherited)
Old High German altar (cognate)
Icelandic aldur (derived)
Norwegian Bokmål alder (inherited)
Norwegian Bokmål aldring (derived)
Norwegian Nynorsk alder (inherited)
Old Norse aldri (mention)
Old Norse aldrigi (link)
Old Norse aldraðr (suffix)
Old Norse aldrœnn (suffix)
Swedish ålder (inherited)