- nominative and genitive case marker
Japonic had two particles that as functioned as both nominative and genitive case markers, *nə and *-nka. According to Pellard (2018), reflexes of *-nka are typically used after pronouns in the daughter languages and reflexes of *nə are used elsewhere. See the Proto-Ryukyuan entries for more specifics.
- Old Japanese: 乃 (no2)
- Japanese: の (no, “(genitive case marker)”)
- Ryukyuan: *no
- ^ Pellard, Thomas (2018), “Ryukyuan and the reconstruction of proto-Japanese-Ryukyuan”, in Handbook of Japanese historical linguistics, De Gruyter Mouton.