Old Norse íkorni

← Old English ācweorna (cognate)

← Proto-Germanic *aikwernô (inherited)

← Old High German eihhorno (cognate)

← Proto-Indo-European *wer- (derived)

← Old Saxon ēkhorn (cognate)

→ Danish egern (derived)

→ Middle English acquerne (cognate)

→ Faroese íkorni (derived)

→ Scanian igarne (inherited)

→ Old High German eihhorno (cognate)

→ Icelandic íkorni (derived)

→ Norwegian Bokmål ekorn (derived)

→ Norwegian Nynorsk ekorn (derived)

→ Swedish ekorre (inherited)