needlewoman, n. seamstress.

needs, adv. necessarily.

needy, a. [destitute], indigent, [penniless], impecunious.

nefarious, a. [atrocious], flagitious, [heinous].

negation, n. [denial], disavowal.

negative, n. [denial], [refusal]. Antonym: [affirmative].

neglect, n. [disregard], [omission], [negligence], default, dereliction, remissness, [oversight].

neglect, v. [disregard], [slight], [overlook], [ignore], [omit].

neglectful, a. See negligent.

negligence, n. [neglect], remissness, [oversight], heedlessness, laches (Law).