Old Norse kostr

← Proto-Germanic *kustuz (inherited)

← Proto-Indo-European *ǵews- (root)

← Proto-Indo-European *ǵéwstus (inherited)

← Proto-Indo-European *ǵews- (derived)

← Latin gustus (cognate)

→ English cost (derived)

→ Old English cyst (cognate)

→ Danish kost (derived)

→ Old Danish kostær (inherited)

→ Icelandic kostur (derived)

→ Norwegian Bokmål kost (derived)

→ Norwegian Nynorsk kost (derived)

→ Old Norse kosta (cognate)

→ Old Norse afarkostr (compound)

→ Swedish kost (derived)