Old Norse fjǫl

← Proto-Germanic *felō (inherited)

→ Westrobothnian fjahl (inherited)

→ Icelandic fjöl (inherited)

→ Norwegian Bokmål fjøl (inherited)

→ Norwegian Nynorsk fjøl (inherited)

→ Old Norse Fjalarr (mention)

→ Old Norse fjalakǫttr (compound)