Online Etymology Dictionary

cone (n.): 1560s, from Middle French cone (16c.) or directly from Latin conus "a cone, peak of a helmet," from Greek konos "cone, spinning top, pine cone," perhaps from PIE root *ko- "to sharpen" (cf. Sanskrit sanah "whetstone," Latin catus "sharp," Old English han "stone").
Conestoga: 1690s, name of an Indian tribe in southcentral Pennsylvania, probably from some Iroquoian language and sometimes said to mean "people of the cabin pole;" later a place in Lancaster County, Pennsylvania. A characteristic type of covered wagon, called Conestoga wagon, was built there from 1750 (about three years before the last of the Conestoga Indians were massacred), but it already was an established term, as the first reference is to the name of a Philadelphia tavern, and probably originally meant the type of wagon farmers used on the road from the city to Conestoga. Also a breed of horses (1824) and a type of boot and cigar (see stogie).
coney (n.): c.1200, from Anglo-French conis, plural of conil "long-eared rabbit" (Lepus cunicula) from Latin cuniculus (source of Spanish conejo, Portuguese coelho, Italian coneglio), the small, Spanish variant of the Italian hare (Latin lepus), the word perhaps from Iberian Celtic (classical writers say it is Spanish).

Rabbit arose 14c. to mean the young of the species, but gradually pushed out the older word 19c., after British slang picked up coney as a punning synonym for cunny "cunt" (cf. connyfogle "to deceive in order to win a woman's sexual favors"). The word was in the King James Bible [Prov. xxx:26, etc.], however, so it couldn't be entirely dropped, and the solution was to change the pronunciation of the original short vowel (rhyming with honey, money) to rhyme with boney. In the Old Testament, the word translates Hebrew shaphan "rock-badger." Rabbits not being native to northern Europe, there was no Germanic or Celtic word for them.
Coney Island: community in Brooklyn, N.Y., so called for the rabbits once found there (see coney) and was known to the Dutch as Konijn Eiland, from which the English name probably derives. It emerged as a resort and amusement park center after the U.S. Civil War.
confab (n.): 1701, colloquial shortening of confabulation.
confabulate (v.): 1610s, from confabulatus, past participle of Latin confabulari "to converse together," from com- "together" (see com-) + fabulari "to talk, chat," from fabula "a tale" (see fable). Psychiatric sense is from 1924.
confabulation (n.): mid-15c., "talking together," from Late Latin confabulationem (nominative confabulatio), noun of action from past participle stem of Latin confabulari (see confabulate).
confarreation (n.): c.1600, from Latin confarreationem, from confarreare "to unite in marriage by the Ceremony of the Cake," from com- "with, together" (see com-) + far, farris "spelt, grain, meal" (see barley). In ancient Rome, the most solemn form of marriage, in which an offering of bread was made in the presence of the Pontifex Maximus and 10 witnesses.
confection (n.): mid-14c., confescioun, from Old French confeccion (12c., Modern French confection) "drawing up (of a treaty, etc.); article, product," in pharmacology, "mixture, compound," from Late Latin confectionem (nominative confectio) "a confection," in classical Latin, "a making, preparing," noun of action from confect-, past participle stem of conficere "to prepare," from com- "with" (see com-) + facere "to make, do" (see factitious). Originally "the making by means of ingredients," sense of "candy or light pastry" predominated from 16c.
confectionary (n.): c.1600, "confection maker," also "confection maker's shop," from confection + -ary. As an adjective, from 1660s.
confectioner (n.): 1590s, agent noun from confection.
confectionery (n.): 1540s, "things made or sold by a confectioner," from confection + -ery. Of architectural ornamentation, from 1861.
confederacy (n.): late 14c., from Anglo-French confederacie (Old French confederacie), from stem of Latin confoederatio, from confoederare (see confederate). Earliest in reference to leagues of classical Greek states (Aetolian, Achaean, etc.), later of the Netherlands. The word was used of the United States of America under (and in) the Articles of Confederation (1777-1788). In reference to the breakaway Confederate States of America (1861-1865) from 1861.
Confederacy now usually implies a looser or more temporary association than confederation, which is applied to a union of states organized on an intentionally permanent basis. [OED]
confederate (v.): late 14c., from Late Latin confoederatus "leagued together," past participle of confoederare "to unite by a league," from com- "with, together" (see com-) + foederare, from foedus (genitive foederis) "a league" (see federal). Also used as a past participle adjective from late 14c., as a simple adjective from 1550s; meaning "of or belonging to the Confederate States of America" is from 1861. Used as a noun from late 15c. (Late Latin confoederatus also was used as a noun in its day).
confederation (n.): early 15c., "act of confederating," from Middle French confédération, from Old French confederacion (14c.), from Late Latin confoederationem (nominative confoederatio), noun of action from confoederare (see confederate). Meaning "states or persons united by a league" is from 1620s.
confer (v.): 1530s, from Middle French conférer (14c.) "to give, converse, compare," from Latin conferre "to bring together," figuratively "to compare; consult, deliberate, talk over," from com- "together" (see com-) + ferre "to bear" (see infer). Sense of "taking counsel" led to conference. The meaning "compare" (common 1530-1650) is largely obsolete, but the abbreviation cf. still is used in this sense. Related: Conferred; conferring.
conference (n.): 1550s, "act of conferring," from Middle French conférence (15c.), from Medieval Latin conferentia, from Latin conferens, present participle of conferre (see confer). Meaning "formal meeting for consultation" is from 1580s.
conferral (n.): 1880, from confer + -al (2).
confess (v.): late 14c., from Old French confesser (transitive and intransitive), from Vulgar Latin *confessare, from Latin confess-, past participle stem of confiteri "to acknowledge," from com- "together" (see com-) + fateri "to admit," akin to fari "speak" (see fame (n.)).

Its original religious sense was of one who avows his religion in spite of persecution or danger but does not suffer martyrdom. Old French confesser thus had a figurative sense of "to harm, hurt, make suffer." Related: Confessed; confessing. An Old English word for it was andettan.
confessed (adj.): "self-acknowledged," 1560s, past participle adjective from confess.
confession (n.): late 14c., "action of confessing," originally in religion, from Old French confession (10c.), from Latin confessionem (nominative confessio) "confession, acknowledgement," noun of action from past participle stem of confiteri (see confess). In law, from 1570s. Meaning "that which is confessed" is mid-15c. An Old English word for it was andettung.
confessional (n.): "place where a priest sits to hear confession," 1727, from French confessional, from Medieval Latin confessionale, noun use of neuter of confessionalis (adj.), from confiteri (see confess).
confessional (adj.): "pertaining to confession," mid-15c., from Medieval Latin confessionalis (see confessional (n.)).
confessor (n.): late Old English, "one who avows his religion," especially in the face of danger, but does not suffer martyrdom, from Latin confessor, agent noun from confiteri (see confess). Meaning "one who hears confessions" is from mid-14c.; this properly would be Latin confessarius, but Latin confessor was being used in this sense from the 9th century.

Edward the Confessor (c.1003-1066, canonized 1161), last Anglo-Saxon king, was pious enough but does not seem to fit his title; perhaps so called to distinguish him from another Anglo-Saxon saint/king, Edward the Martyr, who does fit his.
confetti (n.): 1815, from Italian plural of confetto "sweetmeat," via Old French, from Latin confectum, confectus (see confection). A small candy traditionally thrown during carnivals in Italy, custom adopted in England for weddings and other occasions, with symbolic tossing of paper.
confidant (n.): 1610s, confident, "(male) person trusted with private affairs," from French confident (16c.), from Italian confidente "a trusty friend," literally "confident, trusty," from Latin confidentem (nominative confidens), present participle of confidere "to trust, confide" (see confidence). The spelling with -a- came to predominate 18c. and might reflect the French pronunciation.
confidante (n.): 1709, "female confidant," from French confidente, fem. of confident (see confidant).
confide (v.): mid-15c., "to trust or have faith," from Latin confidere "to trust in, rely firmly upon, believe" (see confidence). Meaning "to share a secret with" is from 1735; phrase confide in (someone) is from 1888. Related: Confided; confiding.
confidence (n.): early 15c., from Middle French confidence or directly from Latin confidentia, from confidentem (nominative confidens) "firmly trusting, bold," present participle of confidere "to have full trust or reliance," from com-, intensive prefix (see com-), + fidere "to trust" (see faith). For sense of "swindle" see con (adj.).
confident (adj.): 1570s, "self-reliant, sure of oneself," from Middle French confident, from Latin confidentem (nominative confidens) "firmly trusting, reliant, self-confident, bold, daring," present participle of confidere (see confidence). Related: Confidently.
confidente (n.): see confidant.
confidential (adj.): 1759, from Latin confidentia (see confidence) + -al (1). Related: Confidentiality; confidentially.
configuration (n.): 1550s, from Latin configurationem (nominative configuratio), noun of action from past participle stem of configurare (see configure).
configure (v.): late 14c., from Latin configurare "to fashion after a pattern," from con- "together" (see com-) + figurare "to form, shape," from figura "a shape, form, figure" (see figure (n.)).
confine (n.): c.1400, "boundary, limit" (usually as confines), from Old French confins "boundaries," from Medieval Latin confines, from Latin confinium (plural confinia) "boundary, limit," from confine, neuter of confinis "bordering on, having the same boundaries," from com- "with" (see com-) + finis "an end" (see finish (n.)).
confine (v.): 1520s, "to border on," from Middle French confiner, from confins (n.); see confine (n.). Sense of "keeping within limits" is from 1590s. Related: Confined; confining.
confinement (n.): 1590s, from French confinement (16c.; the Old French word was confinacion), from confiner (see confine). As a euphemism for "childbed" it dates from 1774 (the Middle English expression was Our Lady's bands).
confirm (v.): mid-13c., confirmyn "to ratify," from Old French confermer (13c., Modern French confirmer) "strengthen, establish, consolidate; affirm by proof or evidence; anoint (a king)," from Latin confirmare "make firm, strengthen, establish," from com-, intensive prefix (see com-), + firmare "to strengthen," from firmus (see firm (adj.)). Related: Confirmative; confirmatory.
confirmation (n.): c.1300, confyrmacyoun, the Church rite, from Old French confirmacion (13c.) "strengthening, confirmation; proof; ratification," from Latin confirmationem (nominative confirmatio) "a securing, establishing; an assurance, encouragement," noun of action from confirmare (see confirm). As a legal action, "verification, proof," from late 14c.; as "action of making sure," from late 15c.
confirmed (adj.): late 14c., of diseases, "firmly established," past participle adjective from confirm. Of persons and their habits, from 1826.
confiscate (v.): 1550s, originally, "to appropriate for the treasury," from Latin confiscatus, past participle of confiscare, from com- "together" (see com-) + fiscus "public treasury," literally "money basket" (see fiscal). Related: Confiscated; confiscating.
confiscation (n.): 1540s, from Middle French confiscation, from Latin confiscationem (nominative confiscatio), noun of action from past participle stem of confiscare (see confiscate).
confit: obsolete form of comfit.
conflagrate (v.): 1650s, "to catch fire," from Latin conflagrat-, past participle stem of conflagrare (see conflagration). Meaning "to set on fire" is from 1835.
conflagration (n.): 1550s, from Middle French conflagration (16c.) or directly from Latin conflagrationem (nominative conflagratio), present participle of conflagrare "to burn up," from com-, intensive prefix (see com-), + flagrare "to burn" (see flagrant).
conflate (v.): 1540s, from Latin conflat-, past participle stem of conflare "to blow up, kindle, light; bring together, compose," also "to melt together," literally "to blow together," from com- "with" (see com-) + flare "to blow" (see blow (v.1)).
conflation (n.): 1620s, from Late Latin conflationem (nominative conflatio), noun of action from past participle stem of conflare (see conflate).
conflict (v.): early 15c., from Latin conflictus, past participle of confligere "to strike together, be in conflict," from com- "together" (see com-) + fligere "to strike" (see afflict). Related: Conflicted; conflicting.
conflict (n.): early 15c., "armed encounter, battle," from Old French conflit and directly from Latin conflictus (see conflict (v.)). Meaning "struggle, quarrel" is from mid-15c. Psychological sense of "incompatible urges in one person" is from 1859 (hence conflicted, past participle adjective). Phrase conflict of interest was in use by 1743.
conflictual (adj.): 1950, in psychological writing, from conflict (n.) on model of habitual, etc.