Old Norse sumr

← Old English sum (cognate)

← English some (cognate)

← Proto-Germanic *sumaz (inherited)

← Old High German sum (cognate)

← Gothic 𐍃𐌿𐌼𐍃 (cognate)

← Proto-Indo-European *sem- (root)

→ Old English sum (cognate)

→ Faroese summur (inherited)

→ Westrobothnian sómt (derived)

→ Icelandic sumir (mention)

→ Icelandic sumur (derived)

→ Norwegian Nynorsk som (derived)