Where does “Nemoiu” come from?

Nemoiu (Romanian) comes from Romanian neam, from Hungarian nem, from Proto-Finno-Ugric ne — no, not.

Ancestry of “Nemoiu”, step by step

StepLanguageWordMeaning
1Romanianneamfamily, sort, kin, tribe; ancestry, lineage,...
2Hungariannemno, not; no; sex, gender
3Proto-Finno-Ugricneno, not
Every word from Proto-Finno-Ugric neEvery word from Hungarian nemEvery word from Romanian neam