Where does “nāchbūr” come from?
nāchbūr (Middle High German) comes from Old High German nāhgibūr, from Proto-West Germanic nāhwagabūrō, from Proto-Germanic nēhwagabūrô, from Proto-Germanic nēhwaz, from Proto-Indo-European h₂nḗḱwos, from Proto-Indo-European h₂neḱ- — to reach, to attain.
Ancestry of “nāchbūr”, step by step