Online Etymology Dictionary

noisome (adj.): late 14c., "harmful, noxious," from noye "harm, misfortune," shortened form of anoi "annoyance" (from Old French anoier, see annoy) + -some (1). Meaning "bad-smelling" first recorded 1570s. Related: Noisomeness.
noisy (adj.): 1690s, "making noise," also "full of noise," from noise + -y (2). Earlier was noiseful (late 14c.). Related: Noisily; noisiness.
noli me tangere: late 14c., "type of facial ulcer, lupus," Latin, literally "touch me not," from noli, imperative of nolle "to be unwilling" + me (see me) + tangere "to touch" (see tangent (adj.)). Used over the years of various persons or things that must not be touched, especially "picture of Jesus as he appeared to Mary Magdalene" (1670s, see John 20:17) and "plant of the genus Impatiens" (1560s, so called because the ripe seed pods burst when touched).
noll (n.): "top of the head," Old English hnoll, cognate with Middle Dutch nolle, Old High German hnol "back part of the head."
nolle prosequi: formal notice to a plaintiff that the prosecutor will not continue a suit, Latin, literally "to be unwilling to pursue." The verb nolle-pross is attested from 1880.
nolo contendere: Latin, literally "I do not wish to contend." A plea that admits no guilt but subjects the defendant to judgment.
nom (n.): French, "name" (9c.), from Latin nomen (see name (n.)). Used in various phrases, such as nom de guerre (1670s), name used by a person engaged in some action, literally "war name;" nom de plume (1823), literally "pen name;" nom de théâtre (1874) "stage name." "Nom de plume is open to the criticism that it is ridiculous for English writers to use a French phrase that does not come from France" [Fowler].
nomad (n.): 1550s, from Middle French nomade (16c.), from Latin Nomas (genitive Nomadis) "wandering groups in Arabia," from Greek nomas (genitive nomados, plural nomades) "roaming, roving, wandering" (to find pastures for flocks or herds), related to nomos "pasture, pasturage, grazing," literally "land allotted," from PIE root *nem- "to divide, distribute, allot" (see nemesis).
nomadic (adj.): 1800, from nomad + -ic.
Nome: city in Alaska, founded in the 1898 gold rush and originally Anvil City after the nearby Anvil Creek, later renamed for nearby Cape Nome, which, according to one story is from a misreading of a British cartographer's query, ?Name, written beside the peninsula on an 1849 map, and according to another is from a supposed native no-me meaning "I don't know," a plea of noncomprehension when asked what the name of the place was.
nomenclature (n.): c. 1600, "a name," from Middle French nomenclature (16c.), from Latin nomenclatura "calling of names," from nomenclator "namer," from nomen "name" (see name (n.)) + calator "caller, crier," from calare "call out" (see claim (v.)).

Nomenclator in Rome was the title of a steward whose job was to announce visitors, and also of a prompter who helped a stumping politician recall names and pet causes of his constituents. Meaning "list or catalogue of names" first attested 1630s; that of "system of naming" is from 1660s; sense of "terminology of a science" is from 1789.
nomenklatura (n.): Russian, literally "a listing of positions to be filled," from Latin nomenclatura (see nomenclature).
nomial (adj.): 1717, abstracted from binomial, etc.
nominal (adj.): early 15c., "pertaining to nouns," from Latin nominalis "pertaining to a name or names," from nomen (genitive nominis) "name," cognate with Old English nama (see name (n.)). Meaning "of the nature of names" (in distinction to things) is from 1610s. Meaning "being so in name only" first recorded 1620s.
nominalism (n.): 1820, "view that treats abstract concepts as names only, not realities," from French nominalisme (1752), from nominal, from Latin nominalis (see nominal). Related: Nominalist.
nominally (adv.): 1660s, "as regards a name," from nominal + -ly (2). Meaning "in name only" (as opposed to really) is attested from 1748.
nominate (v.): 1540s, "to call by name," back-formation from nomination or else from Latin nominatus, past participle of nominare "to name, call by name, give a name to," also "name for office,"" from nomen "name" (see name (n.)). Later "to appoint to some office or duty" (1560s); "to formally enter (someone) as a candidate for election" (c. 1600). It also occasionally was used from c. 1600 with a sense "give a name to." Related: Nominated; nominating.
nomination (n.): early 15c., "act of mentioning by name," from Middle French nomination (14c.), and directly from Latin nominationem (nominative nominatio) "a naming, designation," from nominare "to name" (see nominate (v.)). Meaning "fact of being proposed as a candidate" is attested from late 15c.
nominative (adj.): late 14c., "pertaining to the grammatical case dealing with the subject of a verb," from Old French nominatif, from Latin nominativus "pertaining to naming," from nominatus, past participle of nominare (see nominate). As a noun from 1620s.
nominator (n.): 1650s, from Late Latin nominator, from Latin nominat-, past participle stem of nominare (see nominate).
nominee (n.): 1660s, "person named for something; see nominate + -ee. Sense of "person named as a candidate" is attested from 1680s.
nomothetic (adj.): "lawgiving, legislative; based on law," 1650s, from Greek nomothetikos "relating to legislation, legislative," from nomothetes "lawgiving," from nomos "usage, custom, law" (see numismatic) + thetes "one who puts, places, or establishes." Related: Nomothetical (1610s.)
non compos mentis: Latin, literally "not master of one's mind."
non sequitur: Latin, literally "it does not follow."
non-: prefix meaning "not, lack of," or "sham," 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 *ne "not" + *oi-no-; see one). In some cases perhaps from Middle English non "not" (adj.), from Old English nan (see not).
non-aggression (n.): also nonaggression, 1759, "absence of warlike intentions among nations," from non- + aggression.
non-aligned (adj.): also nonaligned, 1960 in geopolitical sense, from non- + past participle of align. Non-alignment (also nonalignment) in this sense is attested from 1934.
non-com: 1747, short for non-commissioned officer.
non-combatant (n.): also noncombatant, 1809, from non- + combatant. A word from the Napoleonic wars.
non-combustible (adj.): also noncombustible, 1804, from non- + combustible.
non-committal (adj.): also noncommittal, 1829, "characterized by refusal to commit oneself," from non- + committal (see commit).
non-compliance (n.): also noncompliance, 1680s, from non- + compliance. Related: Noncompliant.
non-conforming (adj.): also nonconforming, 1640s, from non- + conforming (see conform). Originally with reference to churches.
non-conformist (n.): also nonconformist, 1610s, originally one who adhered to Church of England doctrine but not its practice, from non- + conformist. After their ejection under the Act of Uniformity (1662) the name passed to the separate churches they joined or formed. In general use from 1670s as "one who does not participate in a practice or course of action." As an adjective from 1640s.
non-conformity (n.): also nonconformity, 1610s, coined in English from non- + conformity. Originally of Church of England clergymen who refused to conform on certain ceremonies.
non-consensual (adj.): also nonconsensual, by 1845, from non- + consensual. Earlier in same sense was non-consenting (1670s).
non-denominational (adj.): also nondenominational, 1893, from non- + denominational.
non-disjunction (n.): also nondisjunction, 1913, from non- + disjunction. Related: Non-disjunctional.
non-entity (n.): also nonentity, c. 1600, "something which does not exist," from non- + entity. Meaning "a person or thing of no importance" is attested from 1710.
non-essential (adj.): also nonessential, 1717, from non- + essential (adj.). Attested as a noun from 1806.
non-Euclidean: 1874, from non- + Euclidean.
non-event (n.): "unimportant or disappointing event," 1962, from non- + event.
non-exclusive (adj.): also nonexclusive, 1836, from non- + exclusive. Related: nonexclusively; nonexclusiveness.
non-existence (n.): 1640s; see non- + existence.
non-existent: also nonexistent, 1650s (n.), 1680s (adj.), from non- + existent.
non-fat (adj.): also nonfat, 1945, from non- + fat.
non-fiction (adj.): also nonfiction, 1866, a librarians' word, first in the reports of the Boston Public Library, from non- + fiction. Apparently not in widespread use until after 1900.
non-intervention (n.): 1831, from non- + intervention.
non-invasive (adj.): also noninvasive, by 1850, from non- + invasive.
non-judgmental (adj.): also nonjudgmental, 1965, from non- + judgmental.