Proto-Pontic is a postulated proto-language.
Proto-Pontic has two members: Proto-Indo-European and Proto-Northwest Caucasian, the protolanguages of the Indo-European (IE) and Northwest Caucasian (NWC) language families. Linguists have postulated this protolanguage after observing many similarities between these two protolanguages in the areas of phonology and morphology.
Examples of similarities that have been noted include:
- Nasal negating particles in both families: English not (IE), French ne (IE), German nicht (IE), Russian nyet (IE); compare Ubykh m- (NWC), Abkhaz m- (NWC).
- A case variously named "accusative", "oblique" or "objective", marked with nasal suffixes: English he (nom) vs him (acc) (IE), Latin luna (nom.) vs lunam (acc.) (IE); compare Ubykh kwæy well (water source) (abs) vs kwæyn (obl).