city in China, literally "southern capital," from Chinese nan "south" + jing "capital."
"no thing, not any thing, not something," Middle English, from Old English naþing, naðinc, from nan "not one" (see none) + þing "thing" (see thing). Meaning "insignificant thing, thing of no consequence" is from c. 1600. As an adverb, "not at all, in no degree," late Old English. As an adjective by 1961. For nothing "not at all" is from c. 1300. Nothing to it, indicating something easy to do, is by 1925. Nothing to write home about, indicating an unremarkable circumstance or thing, is from 1917 among the World War I soldiers.
It forms all or part of: naiad; natant; natation; natatorial; natatorium; nekton; nourish; nurse; nursery; nurture; nutrient; nutriment; nutrition; nutritious; nutritive; supernatant.
It is the hypothetical source of/evidence for its existence is provided by: Sanskrit snati "bathes," snauti "she drips, gives milk;" Avestan snayeite "washes, cleans;" Armenian nay "wet, liquid;" Greek notios "wet, damp," Greek nan "I flow," nekhein "to swim;" Latin nare "to swim," natator "swimmer;" Middle Irish snaim "I swim," snam "a swimming."
a prefix used freely in English and meaning "not, lack of," or "sham," giving a negative sense to any word, 14c., from Anglo-French noun-, from Old French non-, from Latin non "not, by no means, not at all, not a," from Old Latin noenum "not one" (*ne oinom, from PIE root *ne- "not" + PIE root *oi-no- "one, unique"). In some cases perhaps from Middle English non "not" (adj.), from Old English nan (see not). "It differs from un- in that it denotes mere negation or absence of the thing or quality, while un- often denotes the opposite of the thing or quality" [Century Dictionary].
Middle English non, none, from Old English nan "not one, not any, no person; not the least part," from ne "not" (see no) + an "one" (see one). Cognate with Old Saxon, Middle Low German nen, Old Norse neinn, Middle Dutch, Dutch neen, Old High German, German nein "no," and analogous to Latin non- (see non-). It is thus the negative of one, an, and a (1).
As an adverb, "1650s, "by no means;" 1799 as "in no respect or degree, to no extent." As an adjective from late Old English; since c. 1600 reduced to no except in a few archaic phrases, especially before vowels, such as none other, none the worse.