←
Proto-Germanic *ainaz (inherited)
←
Proto-Indo-European *óynos (inherited)
←
Old Norse einn (inherited)
→
Norwegian Nynorsk einskap (suffix)
→
Norwegian Nynorsk eingong (compound)
→
Norwegian Nynorsk einføtt (compound)
→
Norwegian Nynorsk tjueein (affix)
→
Norwegian Nynorsk einbu (affix)