Where does “nms” come from?

nms (Egyptian) comes from Egyptian m-, from Proto-Afro-Asiatic *m-.

Ancestry of “nms”, step by step

Step	Language	Word	Meaning
1	Egyptian	m-	forms masculine abstract nouns from verbs, with...
2	Proto-Afro-Asiatic	*m-	—

nms — Etymology, Origin & Word History | Etymology Explorer