Where does “兄妹” come from?

兄妹 (Japanese) comes from Japanese 兄, from Old Japanese あに, from Japanese の, from Old Japanese の, from Middle Chinese 能 — talent, ability.

兄妹 (Japanese): elder brother and younger sister

Definitions

  1. elder brother and younger sister

Ancestry of “兄妹”, step by step

兄妹 traces back through two separate lines of ancestry.

via Japanese

StepLanguageWordMeaning
1Japaneseelder brother; elder brother-in-law; Short for...
2Old Japaneseあに
3Japanesegenitive case marker; nominative case marker in a...
4Old Japaneseplain, field
5Middle Chinesetalent, ability

via Japanese

StepLanguageWordMeaning
1Japanesea close female companion; one's own younger...
2Japanesea person, human; an individual; mankind, people
3Proto-Japonic*pitəone
Every word from Middle Chinese Every word from Old Japanese Every word from Japanese