Núarannoun *"West-king"; Núaran Númenoren *"West-king of Númenor"; changed (according to LR:71) to Núraran Númenen, *"West-king of the West" (all of this is "Qenya" with genitive in -n instead of -o, as in Tolkien's later Quenya) (LR:60)
nucumna("k") adj. (or passive participle) "humbled" (SD:246). This probably contains a verbal stem #nucum- "to humble, humiliate"; compare naham- with passive participle nahamna (q.v.)
nuhta- vb. "stunt, prevent from coming to completion, stop short, not allow to continue" (WJ:413)
nuhuinennaadj. "under shadow" (allativic: nu-huinë-nna "under-shadow-to") (SD:246); see huinë.
nuinënoun "river (of large volume, and liable to flooding)". The word is said to be archaic, surviving chiefly in topographical names. It comes from earlier duine, hence appearing in that form in a name like Nunduinë(VT48:30-31), apparently also Anduinë (q.v.) Tolkien struck out the paragraph where nuinë occurs, but the names Nunduinë/Anduinë would suggest that the word as such is conceptually valid.