Old Norse seiðr

← Proto-Germanic *saidaz (inherited)

← Proto-Indo-European *soytós (inherited)

→ Danish sej (inherited)

→ Danish sejd (borrowed)

→ Faroese seiður (derived)

→ Icelandic seiður (inherited)

→ Icelandic siða (mention)

→ Norwegian Bokmål sei (derived)

→ Norwegian Nynorsk sei (derived)

→ Old Norse seiðmaðr (compound)

→ Old Norse seiðkona (compound)

→ Old Norse seiðberandi (affix)