[narrow escape] {n. phr.} An escape by a very small margin; […]

[narrow-minded] {adj. phr.} Limited in outlook; resistant to new ideas; bigoted. […]

[nary a] {informal} Not a single; not one; never a. * […]

[nasty-nice] {adj.} Unkind in a polite way; disagreeable while pretending to […]

[natural] See: [BIG AS LIFE] or [BIG AS LIFE AND TWICE […]

[natural-born] {adj.} 1. Being a (citizen) because you were born in […]

[nature] See: [SECOND NATURE].

[naught] See: [GO FOR NOTHING] also [GO FOR NAUGHT].

[NBD] "No big deal"

[near] See: [FAR AND NEAR].