Online Etymology Dictionary

needle (v.): 1715, "to sew or pierce with a needle," from needle (n.). Meaning "goad, provoke" (1881) probably is from earlier meaning "haggle in making a bargain" (1812). Related: Needled; needling.
needlepoint (n.): "point of a needle," c. 1700; "point lace made with the needle," 1865, from needle (n.) + point (n.).
needless (adj.): c. 1300, "not needed, unnecessary," from need (n) + -less. Related: Needlessly. Phrase needless to say or speak is recorded from early 16c.
needlework (n.): "sewing, embroidery, etc.," late 14c., from needle (n.) + work (n.).
needs (adv.): "of necessity, necessarily," in archaic constructions involving must (late 14c.) is from Old English nede, instrumental and genitive singular of nied (see need), used as an adverb reinforcing must, hence the genitive ending.
needways (adv.): "by necessity," c. 1300, a northern and Scottish word, marked as obsolete in OED; from need (n.) + way (n.), with adverbial genitive.
needy (adj.): late 12c., neodi "poor, indigent," from need (n.) + adjectival suffix -y (2). Similar formation in Dutch noodig, German nothig, Old Norse nauðigr. As a noun from mid-14c. Related: Needily; neediness.
neep (n.): "a turnip," Scottish and dialectal, from Middle English nepe, from Old English næp "turnip," from Latin napus (see turnip).
neese (v.): also neeze "sneeze," northern and Scottish, from Middle English nesen (mid-14c.), probably from Old Norse hnjosa, of imitative origin (compare Old High German niosan, German niesen, Middle Dutch niesen).
nefandous (adj.): "not to be spoken of," 1630s, from Latin nefandous "unmentionable, impious, heinous," from ne-, negative particle, + fandus "to be spoken," gerundive of fari "to speak," from PIE root *bha- (2) "to speak, tell, say" (see fame (n.)).
nefarious (adj.): c. 1600, from Latin nefarius "wicked, abominable, impious," from nefas "crime, wrong, impiety," from ne- "not" (see un-) + fas "right, lawful, divinely spoken," related to fari "to speak," from PIE root *bha- (2) "to speak, tell, say" (see fame (n.)). Related: Nefariously.
negate (v.): 1795 (with an isolated use from 1620s), back-formation from negation, or else from Latin negatus, past participle of negare. Related: Negated; negates; negating.
negation (n.): early 15c., from Old French negacion (12c.) and directly from Latin negationem (nominative negatio) "denial," noun of action from past participle stem of negare "deny, say no" (see deny).
negative (adj.): c. 1400, "expressing denial," from Old French negatif (13c.) and directly from Latin negativus "that which denies," from negat-, past participle stem of negare "deny, say no" (see deny). Meaning "expressing negation" is from c. 1500; that of "characterized by absence" is from 1560s. Algebraic sense is from 1670s. The electricity sense is from 1755.
Negative Capability, that is when a man is capable of being in uncertainties, Mysteries, doubts without any irritable reaching after fact and reason. [John Keats, letter, Dec. 21, 1817]
Related: Negatively.
negative (n.): late 14c., "a prohibition; absence, nonexistence; opposite," from Old French negatif and directly from Latin negativus (see negative (adj.)). Meaning "a negative statement" is from 1560s. As a response, "I refuse, disagree, no," from 1945. Meaning "a negative quality" is from 1640s. In mathematics, "a negative number," from 1706. Photographic sense first recorded 1853.
negativism (n.): 1824, "the policy of opposition;" see negative + -ism. In a psychological sense, it is attested from 1892.
negativity (n.): 1842, from negative + -ity.
negatory (adj.): "expressing negation," 1570s, from Middle French negatoire or directly from Medieval Latin negatorius "negative," from Latin negatus, past participle of negare "deny, say no, to refuse" (see deny). In the sense "no" it is U.S. Air Force slang from the early 1950s.
negentropy (n.): 1950, compounded from negative entropy.
neglect (v.): 1520s, from Latin neglectus, past participle of neglegere "to make light of, disregard, be indifferent to, not heed, not trouble oneself about," literally "not to pick up," variant of neclegere, from Old Latin nec "not" (see deny) + legere "pick up, select" (see lecture (n.)). Related: Neglected; neglecting.
neglect (n.): 1580s, from neglect (v.) or from Latin neglectus "a neglecting," noun use of past participle of neglegere.
neglected (adj.): "not treated with proper attention," c. 1600, past participle adjective from neglect (v.).
neglectful (adj.): 1640s, from neglect + -ful. Related: Neglectfully; neglectfulness. Earlier in same sense was neglective (1610s).
neglection (n.): 1590s, soon obsolete, from Latin neglectionem (nominative neglectio) "a neglecting," noun of action from past participle stem of neglegere (see neglect (v.)).
negligee (n.): 1756, "a kind of loose gown worn by women," from French négligée, noun use of fem. past participle of négligier "to neglect" (14c.), from Latin neglegere "to disregard, not heed, not trouble oneself about," also "to make light of" (see neglect (v.)). So called in comparison to the elaborate costume of a fully dressed woman of the period. Grose ["Dictionary of the Vulgar Tongue," 1788] reports it "vulgarly termed a neggledigee." Borrowed again, 1835; the modern sense "semi-transparent, flimsy, lacy dressing gown" is yet another revival, first recorded 1930. It also was used in the U.S. funeral industry mid-20c. for "shroud of a corpse."
negligence (n.): mid-14c., from Old French negligence "negligence, sloth; injury, injustice" (12c.), and directly from Latin neclegentia, neglegentia "carelessness, heedlessness, neglect," from neglegentem (nominative neglegens) "heedless, careless, unconcerned," present participle of neglegere "to neglect" (see neglect (v.)).
negligent (adj.): late 14c., from Old French negligent "careless, negligent" (13c.) or directly from Latin negligentem "heedless, careless, unconcerned" (see negligence). Related: Negligently.
negligible (adj.): "capable of being neglected," 1819, from negligence + -ible. Related: Negligibly; negligibility.
negotiable (adj.): 1749, from negotiate + -able, or from French négociable (17c.). Related: Negotiably; negotiability.
negotiate (v.): "to communicate in search of mutual agreement," 1590s, back-formation from negotiation, or else from Latin negotiatus, past participle of negotiari. In the sense of "tackle successfully" (1862), it at first meant "to clear on horseback a hedge, fence, or other obstacle" and "originated in the hunting-field; those who hunt the fox like also to hunt jocular verbal novelties" [Gowers, 1965]. Related: Negotiated; negotiating.
negotiation (n.): early 15c., from Old French negociacion "business, trade," and directly from Latin negotiationem (nominative negotiatio) "business, traffic," noun of action from past participle stem of negotiari "carry on business, do business, act as a banker," from negotium "a business, employment, occupation, affair (public or private)," also "difficulty, pains, trouble, labor," literally "lack of leisure," from neg- "not" (see deny) + otium "ease, leisure." The sense expansion from "doing business" to also include "bargaining" about anything took place in Latin.
negotiator (n.): 1590s, "businessman," from Latin negotiator "one who carries on business by wholesale," from negotiatus, past participle of negotiari (see negotiation). Meaning "one who carries on negotiations" is from c. 1600.
negress (n.): 1750, from French négresse, fem. of nègre "negro," which came to French via Spanish or Portuguese (see Negro).
negrification (n.): 1929, in social context, from Negro on model of pacification, etc. Johnson (1755) has the word in the literal sense "act of making black."
negritic (adj.): 1878, from Negro + -itic.
negritude (n.): 1950, from French négritude; see negro + -tude. Supposedly coined by young authors from the French colonies of Africa before World War II.
Negro (n.): "member of a black-skinned race of Africa," 1550s, from Spanish or Portuguese negro "black," from Latin nigrum (nominative niger) "black, dark, sable, dusky," figuratively "gloomy, unlucky, bad, wicked," of unknown origin (perhaps from PIE *nekw-t- "night;" see Watkins). As an adjective from 1590s. Use with a capital N- became general early 20c. (e.g. 1930 in "New York Times" stylebook) in reference to U.S. citizens of African descent, but because of its perceived association with white-imposed attitudes and roles the word was ousted late 1960s in this sense by Black (q.v.).
Professor Booker T. Washington, being politely interrogated ... as to whether negroes ought to be called 'negroes' or 'members of the colored race' has replied that it has long been his own practice to write and speak of members of his race as negroes, and when using the term 'negro' as a race designation to employ the capital 'N' ["Harper's Weekly," June 2, 1906]
Meaning "English language as spoken by U.S. blacks" is from 1704. French nègre is a 16c. borrowing from Spanish negro.
negroid (adj.): 1844, a hybrid, from Negro and Greek suffix -oeides "like, resembling" (see -oid). As a noun from 1859.
Negrophile: 1803, from Negro + -phile.
Negrophobe (n.): 1864, from Negro + -phobe.
Negrophobia (n.): 1819, from Negro + -phobia.
Negus: title of the ruler of Abyssinia, 1590s, from Amharic negush "king," from stem of nagasha "he forced, ruled."
Nehemiah: masc. proper name, Jewish leader under Persian king Artaxerxes, from Hebrew Nehemyah, literally "the Lord comforts."
Nehru: of a type of long, narrow jacket with a standing collar (popular in Western fashion late 1960s), 1967, a reference to Jawaharlal Nehru (1889-1964), first prime minister of independent India (1947-1964), who often wore such a jacket in public appearances.
neigh (v.): Old English hnægan "to neigh," probably of imitative origin (compare Old Norse gneggja "to neigh," Middle High German negen, French hennir, Japanese inanaki). Related: Neighed; neighing. As a noun from 1510s.
neighbor (n.): Old English neahgebur (West Saxon), nehebur (Anglian) "neighbor," from neah "near" (see nigh) + gebur "dweller," related to bur "dwelling" (see bower). Common Germanic compound (cognates: Old Saxon nabur, Middle Dutch naghebuur, Dutch (na)bur, Old High German nahgibur, Middle High German nachgebur, German Nachbar). Good neighbor policy attested by 1937, but good neighbor with reference to U.S. policy toward Latin America was used by 1928 by Herbert Hoover.
neighbor (v.): 1580s, from neighbor (n.). Related: Neighbored; neighboring.
neighborhood (n.): mid-15c., "neighborly conduct, friendliness," from neighbor (n.) + -hood. Modern sense of "community of people who live close together" is first recorded 1620s. Phrase in the neighborhood of meaning "near, somewhere about" is first recorded 1857, American English. The Old English word for "neighborhood" was neahdæl.
neighborly (adj.): 1550s, from neighbor (n.) + -ly (1). Earlier as an adverb (1520s), while an earlier adjective form was neighborlike (late 15c.). Related: Neighborliness, which ousted earlier neighborship (mid-15c.).
neighbour: chiefly British English spelling of neighbor (q.v.); for spelling, see -or.