neither, neither one · neuter (gender) · neuter, intransitive (of a verb)
köken: Etymology tree Latin ne Proto-Indo-European *kʷ- Proto-Indo-European *kʷos Proto-Indo-European *-teros Proto-Indo-European *kʷóteros Proto-Italic *kʷoteros Latin uter Latin neuter From ne (“not”) + uter (“either”). In the grammatical sense, a semantic loan from Koine Greek οὐδέτερος (oudéteros), from οὐδέ (oudé, “not”) + ἕτερος (héteros, “one or the other (of two)”).
köken: Sino-Vietnamese word from 內 (“inside”). A woman once married is considered belonging to a different family, hence the "inside" father's side and "outside" mother's side.