Old Norse fax

← Proto-Germanic *fahsą (inherited)

← Proto-Indo-European *peḱ- (root)

← Proto-Indo-European *peḱ- (mention)

→ Old English feax (cognate)

→ Faroese faks (derived)

→ Icelandic fax (derived)

→ Old Norse faxaðr (suffix)

→ Old Norse fǫxóttr (suffix)