Norwegian Nynorsk foss

← Proto-Germanic *fursaz (inherited)

← Proto-Indo-European *pers- (root)

← Old Norse fors (inherited)

← Old Norse foss (mention)

→ Norwegian Nynorsk fosse (mention)

→ Norwegian Nynorsk fossa (mention)

→ Norwegian Nynorsk fossefall (compound)

→ Norwegian Nynorsk fossro (affix)