Old Norse lǫgr

← Proto-Germanic *laguz (inherited)

← Proto-Indo-European *lókus (inherited)

← Latin lacus (cognate)

→ Westrobothnian lag (inherited)

→ Icelandic lögur (derived)

→ Norwegian Bokmål låg (inherited)

→ Norwegian Nynorsk log (inherited)

→ Swedish lag (derived)