Online Etymology Dictionary

forsake (v.): Old English forsacan "object to, oppose, refuse, deny; give up, renounce" (past tense forsoc, past participle forsacen), from for- "completely" + sacan "to struggle, dispute, wrangle; accuse, blame" (see sake). Related: Forsaking. Similar formation in Old Saxon farsakan, Dutch verzaken, Old High German farsahhan "deny, repudiate," Danish forsage "give up, refuse."
Forsake is chiefly applied to leaving that by which natural affection or a sense of duty should or might have led us to remain: as, to forsake one's home, friends, country, or cause; a bird forsakes its nest. In the passive it often means left desolate, forlorn. [Century Dictionary]
petition (n.): early 14c., "a supplication or prayer, especially to a deity," from Old French peticion "request, petition" (12c., Modern French pétition) and directly from Latin petitionem (nominative petitio) "a blow, thrust, attack, aim; a seeking, searching," in law "a claim, suit," noun of action from past participle stem of petere "to make for, go to; attack, assail; seek, strive after; ask for, beg, beseech, request; fetch; derive; demand, require," from PIE root *pet-, also *pete- "to rush; to fly" (source also of Sanskrit pattram "wing, feather, leaf," patara- "flying, fleeting;" Hittite pittar "wing;" Greek piptein "to fall," potamos "rushing water," pteryx "wing;" Old English feðer "feather;" Latin penna "feather, wing;" Old Church Slavonic pero "feather;" Old Welsh eterin "bird"). Meaning "formal written request to a superior (earthly)" is attested from early 15c.
phoenix (n.): Old English and Old French fenix, from Medieval Latin phenix, from Latin phoenix, from Greek phoinix, the mythical bird of Arabia which flew to Egypt every 500 years to be reborn; it also meant "the date" (fruit and tree), and "Phoenician," literally "purple-red," perhaps a foreign word (Egyptian has been suggested), or from phoinos "blood-red." The exact relation and order of the senses in Greek is unclear.
Ðone wudu weardaþ wundrum fæger
fugel feþrum se is fenix hatan
["Phoenix," c.900]
Spelling assimilated to Greek 16c. (see ph). Figurative sense of "that which rises from the ashes of what was destroyed" is attested from 1590s. The city in Arizona, U.S., so called because it was founded in 1867 on the site of an ancient Native American settlement.
duck (n.1): waterfowl, Old English duce (found only in genitive ducan) "a duck," literally "a ducker," presumed to be from Old English *ducan "to duck, dive" (see duck (v.)). Replaced Old English ened as the name for the bird, this being from PIE *aneti-, the root of the "duck" noun in most Indo-European languages.
In the domestic state the females greatly exceed in number, hence duck serves at once as the name of the female and of the race, drake being a specific term of sex. [OED]
As a term of endearment, attested from 1580s. duck-walk is 1930s; duck soup "anything easily done" is by 1899. Duck's ass haircut is from 1951. Ducks-and-drakes, skipping flat stones on water, is from 1580s; the figurative sense of "throwing something away recklessly" is c. 1600.
booby (n.): 1590s, from Spanish bobo "stupid person, slow bird" (used of various ungainly seabirds), probably from Latin balbus "stammering," from an imitative root (see barbarian).

Booby prize is by 1883: an object of little value given to the loser of a game; booby trap is 1850, originally a schoolboy prank; the more lethal sense developed during World War I.
At the end of every session the dominie had the satirical custom of presenting his tawse as a "booby-prize" to some idle or stupid lout whom he picked out as meriting this distinction so that next time they met he might start fresh and fair with new pair for a new set of classes. [Ascott R. Hope, "Dumps," "Young England" magazine, 1883]
cock (n.1): "male chicken," Old English cocc "male bird," Old French coc (12c., Modern French coq), Old Norse kokkr, all of echoic origin. Old English cocc was a nickname for "one who strutted like a cock," thus a common term in the Middle Ages for a pert boy, used of scullions, apprentices, servants, etc.

A common personal name till c. 1500, it was affixed to Christian names as a pet diminutive, as in Wilcox, Hitchcock, etc. Slang sense of "penis" is attested since 1610s (but compare pillicock "penis," from c. 1300); cock-teaser is from 1891. A cocker spaniel (1823) was trained to start woodcocks. Cock-and-bull is first recorded 1620s, perhaps an allusion to Aesop's fables, with their incredible talking animals, or to a particular story, now forgotten. French has parallel expression coq-à-l'âne.
popinjay (n.): late 13c., "a parrot," from Old French papegai (12c.), from Spanish papagayo, from Arabic babagha', Persian babgha "parrot," possibly formed in an African or other non-Indo-European language and imitative of its cry. Ending probably assimilated in Western European languages to "jay" words (Old French jai, etc.).

Used of people in a complimentary sense (in allusion to beauty and rarity) from early 14c.; meaning "vain, talkative person" is first recorded 1520s. Obsolete figurative sense of "a target to shoot at" is explained by Cotgrave's 2nd sense definition: "also a woodden parrot (set up on the top of a steeple, high tree, or pole) whereat there is, in many parts of France, a generall shooting once euerie yeare; and an exemption, for all that yeare, from La Taille, obtained by him that strikes downe" all or part of the bird.
preen (v.): "to trim, to dress up," late 14c., perhaps a variation of Middle English proynen, proinen "trim the feather with the beak" (see prune (v.)); or perhaps from Old French poroindre "anoint before," and Old French proignier "round off, prune." Middle English prene (from Old English preon, a general Germanic word) meant "to pin," and probably influenced the form of this word. Watkins, however, connects it with Latin unguere "to smear, anoint."

Because of the popularity of falconry, bird activities formerly were more closely observed and words for them were more precise in English than today.
Youre hawke proynith and not pikith and she prenyth not bot whan she begynnyth at hir leggys, and fetcheth moystour like oyle at hir taill. ["Book of St. Albans," 1486]
wing (n.): late 12c., wenge, from Old Norse vængr "wing of a bird, aisle, etc." (cognate with Danish and Swedish vinge "wing"), of unknown origin, perhaps from a Proto-Germanic *we-ingjaz, suffixed form of PIE root *we- "blow" (source of Old English wawan "to blow;" see wind (n.1)). Replaced Old English feðra (plural) "wings" (see feather). The meaning "either of two divisions of a political party, army, etc." is first recorded c. 1400; theatrical sense is from 1790.

The slang sense of earn (one's) wings is 1940s, from the wing-shaped badges awarded to air cadets on graduation. To be under (someone's) wing "protected by (someone)" is recorded from early 13c. Phrase on a wing and a prayer is title of a 1943 song about landing a damaged aircraft.
light (v.1): "to touch down," as a bird from flight, "get down or descend," as a person from horseback, from Old English lihtan "to alight; to alleviate, make less heavy," from Proto-Germanic *linkhtijan, literally "to make light," from *lingkhtaz "not heavy" (see light (adj.1)). Apparently the etymological sense is "to dismount" (a horse, etc.), and thus relieve it of one's weight."

Alight has become the more usual word. To light on "happen upon, come upon" is from late 15c. To light out "leave hastily, decamp" is 1866, from a nautical meaning "move out, move heavy objects" (1841), a word of unknown origin but perhaps belonging to this word (compare lighter (n.1)).
lime (n.1): "chalky, sticky mineral used in making mortar," from Old English lim "sticky substance, birdlime;" also "mortar, cement, gluten," from Proto-Germanic *leimaz (source also of Old Saxon, Old Norse, Danish lim, Dutch lijm, German Leim "birdlime"), from PIE root *(s)lei- "slime, slimy, sticky" (source also of Latin limus "slime, mud, mire," linere "to smear;" see slime (n.)).

Bird-lime is prepared from the bark of the holly, it was spread on twigs and used for catching small birds. The lime used in building, etc. is made by putting limestone or shells in a red heat, which burns off the carbonic acid and leaves a brittle white solid which dissolves easily in water. Hence lime-kiln (late 13c.), lime-burner (early 14c.). As a verb, c. 1200, from the noun.
patent (n.): late 14c., "open letter or document from some authority," shortened form of Anglo-French lettre patent (also in Medieval Latin (litteræ) patentes), literally "open letter" (late 13c.), from Old French patente (see patent (adj.)).
The Letters Patent were ... written upon open sheets of parchment, with the Great Seal pendent at the bottom ... [while] the 'Litteræ Clausæ,' or Letters Close, ... being of a more private nature, and addressed to one or two individuals only, were closed or folded up and sealed on the outside. [S.R. Scargill-Bird, "A Guide to the Principal Classes of Documents at the Public Record Office," 1891]
Meaning "a licence covering an invention" is from 1580s.
few (adj.): Old English feawe (plural; contracted to fea) "not many, a small number; seldom, even a little," from Proto-Germanic *faw- (source also of Old Saxon fa, Old Frisian fe, Old High German fao, Old Norse far, Danish faa).

This is from PIE root *pau- (1) "few, little" (source also of Latin paucus "few, little," paullus "little," parvus "little, small," pauper "poor;" Greek pauros "few, little," pais (genitive paidos) "child;" Latin puer "child, boy," pullus "young animal;" Oscan puklu "child;" Sanskrit potah "a young animal," putrah "son;" Old English fola "young horse;" Old Norse fylja "young female horse;" Old Church Slavonic puta "bird;" Lithuanian putytis "young animal, young bird").

Always plural in Old English, according to OED "on the analogy of the adverbial fela," meaning "many." Phrase few and far between attested from 1660s. Unusual ironic use in quite a few "many" (1854), earlier a good few (1803).
There is likewise another dialectical use of the word few among them [i.e. "the Northern Counties"], seemingly tending to its total overthrow; for they are bold enough to say--"a good few," meaning a good many. [Samuel Pegge, "Anecdotes of the English Language," London, 1803]
flamenco (n.): 1882, from Spanish flamenco, first used of Gypsy dancing in Andalusia. The word in Spanish meant "a Fleming, native of Flanders" (Dutch Vlaming) and also "flamingo." Speculation are varied and colorful about the connection between the bird, the people, and the gypsy dance of Andalusia.

Spain ruled Flanders for many years in 16c., and King Carlos I brought with him to Madrid an entire Flemish court. One etymology suggests the dance was so called from the bright costumes and energetic movements, which the Spanish associated with Flanders; another is that Spaniards, especially Andalusians, like to name things by their opposites, and because the Flemish were tall and blond and the gypsies short and dark, the gypsies were called "Flemish;" others hold that flamenco was the general Spanish word for all foreigners, gypsies included; or that Flemish noblemen, bored with court life, took to slumming among the gypsies. Compare Gypsy.
chicken (n.): Old English cicen (plural cicenu) "young fowl," which by early Middle English had came to mean "young chicken," then later any chicken, from Proto-Germanic *kiukinam (source also of Middle Dutch kiekijen, Dutch kieken, Old Norse kjuklingr, Swedish kyckling, German Küken "chicken"), from root *keuk- (echoic of the bird's sound and possibly also the root of cock (n.1)) + diminutive suffixes.

Applied to the young of other bird species from early 13c. Adjective sense of "cowardly" is at least as old as 14c. (compare hen-herte "a chicken-hearted person," mid-15c.). As the name of a game of danger to test courage, it is first recorded 1953. Chicken feed "paltry sum of money" is by 1897, American English slang; literal use (it is made from the from lowest quality of grain) by 1834. Chicken lobster "young lobster," is from c. 1960s, American English, apparently from chicken in its sense of "young." Generic words for "chicken" in Indo-European tend to be extended uses of "hen" words, as hens are more numerous among domestic fowl, but occasionally they are from words for the young, as in English and in Latin pullus.
pen (n.1): "writing implement," late 13c., from Old French pene "quill pen; feather" (12c.) and directly from Latin penna "a feather, plume," in plural "a wing," in Late Latin, "a pen for writing," from Old Latin petna, pesna, from PIE *pet-na-, suffixed form of root *pet- "to rush; to fly" (see petition (n.)).

Latin penna and pinna "a feather, plume;" in plural "a wing;" also "a pinnacle; battlement" (see pin (n.)) are treated as identical in Watkins, etc., but regarded as separate (but confused) Latin words by Tucker and others, who derive pinna from PIE *spei- "sharp point" (see spike (n.1)) and see the "feather/wing" sense as secondary.

In later French, this word means only "long feather of a bird," while the equivalent of English plume is used for "writing implement," the senses of the two words thus are reversed from the situation in English. Pen-and-ink (adj.) is attested from 1670s. Pen name is recorded from mid-19c.
sound (n.1): "noise, what is heard, sensation produced through the ear," late 13c., soun, from Old French son "sound, musical note, voice," from Latin sonus "sound, a noise," from PIE *swon-o-, from root *swen- "to sound" (source also of Sanskrit svanati "it sounds," svanah "sound, tone;" Latin sonare "to sound;" Old Irish senim "the playing of an instrument;" Old English geswin "music, song," swinsian "to sing;" Old Norse svanr, Old English swan "swan," properly "the sounding bird").

The terminal -d was established c. 1350-1550 as part of a tendency to add -d- after -n-. Compare gender (n.), thunder (n.), jaundice (n.), kindred. First record of sound barrier is from 1939. Sound check is from 1977; sound effects is 1909, originally live accompaniments to silent films.
The experts of Victor ... will ... arrange for the synchronized orchestration and sound effects for this picture, in which airplane battles will have an important part. ["Exhibitor's Herald & Moving Picture World," April 28, 1928]
jayhawker (n.): "freebooter, guerrilla," American English, 1858, originally "irregular or marauder during the 'Bleeding Kansas' troubles" (especially one who came from the North). It seems to have come into widespread use only during the Civil War. There was said to have been a bird of this name, but evidence for it is wanting. Perhaps a disparaging use from jay (n.). Hence back-formed verb jayhawk "harass" (1866).
Bushwhackers are men, united together, but not soldiers, who live in the bush; and whose avowed object is to kill every Union soldier they can, and cripple, so far as they can, the resources of the Federal military power. The jayhawkers are thieves. They plunder indiscriminately from all parties. In the same band are both rebel and Union men. ... Guerilla bands are companies enlisted and sworn into the rebel service; but not belonging to the armies. [Henry M. Painter, "Brief Narrative of Incidents in the War in Missouri," Boston, 1863.]
egg (n.): mid-14c., egge, mostly in northern England dialect, from Old Norse egg, from Proto-Germanic *ajja(m) (source also of Old Saxon, Middle Dutch, Dutch, Old High German, German ei, Gothic ada), probably from PIE *owyo-/*oyyo- "egg" (source also of Old Church Slavonic aja, Russian jajco, Breton ui, Welsh wy, Greek oon, Latin ovum); possibly derived from root *awi- "bird."

This Norse-derived northern word vied in Middle English with native cognates eye, eai, from Old English æg, until finally displacing the others after c. 1500. Caxton (15c.) writes of a merchant (probably a north-country man) in a public house on the Thames who asked for eggs:
And the goode wyf answerde, that she coude speke no frenshe. And the marchaunt was angry, for he also coude speke no frenshe, but wolde have hadde egges, and she understode hym not.
She did, however, recognize another customer's request for "eyren." Used of persons from c. 1600. Bad egg in the figurative sense is from 1855; bad eggs aren't always obvious to outward view (there was an old proverb, "bad bird, bad egg"). To have egg on (one's) face "look foolish" is attested by 1948.
[Young & Rubincam] realize full well that a crew can sometimes make or break a show. It can do little things to ruin a program or else, by giving it its best, can really get that all-important rating. They are mindful of an emcee of a variety show who already has been tabbed "old egg in your face" because the crew has managed to get him in such awkward positions on the TV screen. ["Billboard," March 5, 1949]
Eggs Benedict attested by 1898. The figure of speech represented in to have all (one's) eggs in one basket is attested by 1660s. The conundrum of the chicken (or hen) and the egg is attested from 1875.
Bumble, bramble, which came first, sir,
Eggs or chickens? Who can tell?
I'll never believe that the first egg burst, sir,
Before its mother was out of her shell.

[Mary Mapes Dodge, "Rhymes and Jingles," N.Y., 1875]
faggot (n.2): "male homosexual," 1914, American English slang, probably from earlier contemptuous term for "woman" (1590s), especially an old and unpleasant one, in reference to faggot (n.1) "bundle of sticks," as something awkward that has to be carried (compare baggage "worthless woman," 1590s). It may also be reinforced by Yiddish faygele "homosexual" (n.), literally "little bird." It also may have roots in British public school slang noun fag "a junior who does certain duties for a senior" (1785), with suggestions of "catamite," from fag (v.). This also spun off a verb (see fag (v.2).
He [the prefect] used to fag me to blow the chapel organ for him. ["Boy's Own Paper," 1889]
Other obsolete British senses of faggot were "man hired into military service merely to fill out the ranks at muster" (1700) and "vote manufactured for party purposes" (1817).

The explanation that male homosexuals were called faggots because they were burned at the stake as punishment is an etymological urban legend. Burning sometimes was a punishment meted out to homosexuals in Christian Europe (on the suggestion of the Biblical fate of Sodom and Gomorrah), but in England, where parliament had made homosexuality a capital offense in 1533, hanging was the method prescribed. Use of faggot in connection with public executions had long been obscure English historical trivia by the time the word began to be used for "male homosexual" in 20th century American slang, whereas the contemptuous slang word for "woman" (in common with the other possible sources or influences listed here) was in active use early 20c., by D.H. Lawrence and James Joyce, among others.
goat (n.): Old English gat "she-goat," from Proto-Germanic *gaito (source also of Old Saxon get, Old Norse geit, Danish gjed, Middle Dutch gheet, Dutch geit, Old High German geiz, German Geiß, Gothic gaits "goat"), from PIE *ghaid-o- "young goat," also forming words for "to play" (source also of Latin hædus "kid").
They are sprightly, capricious, and wanton, and their strong odor (technically called hircine) is proverbial. [Century Dictionary]
The word for "male goat" in Old English was bucca or gatbucca (see buck (n.)) until late 1300s shift to he-goat, she-goat (Nanny goat is 18c., billy goat 19c.). Meaning "licentious man" is attested from 1670s (hence goat-milker, name of a bird formerly believed to suck the milk from goats at night, but also old slang for "a prostitute," also "the female pudendum"). To get (someone's) goat is from 1910, American English, perhaps from French prendre sa chèvre "take one's source of milk," or more likely with notion of "to steal a goat mascot" from a racehorse, warship, fire company, military unit, etc.
... to become separated from your goat is a thing no soldierman is willing to contemplate. ["Letitia, Nursery Corps, U.S.A.," in American Magazine, vol. 64, June 1907]
fly (n.): Old English fleoge "a fly, winged insect," from Proto-Germanic *fleugon "flying insect" (source also of Old Saxon fleiga, Old Norse fluga, Middle Dutch vlieghe, Dutch vlieg, Old High German flioga, German Fliege "fly"); literally "the flying (insect)" (compare Old English fleogende "flying"), from same source as fly (v.1).

Originally any winged insect (moths, gnats, beetles, locusts, hence butterfly, etc.) and long used by farmers and gardeners for any insect parasite. Flies figuratively for "large numbers" of anything is from 1590s. Plural flien (as in oxen, etc.) gradually normalized 13c.-15c. to -s. Fly in the ointment is from Eccles. x:1. Fly on the wall "unseen observer" first recorded 1881. No flies on _____ "no lack of activity or alertness on the part of," is attested by 1866. Meaning "fish-hook dressed to resemble an insect" is from 1580s; Fly-fishing is from 1650s. Fly-catcher "bird which eats insects on the wing" is from 1670s. The fly agaric mushroom (1788) so called because it was used as a poison for flies.

The sense of "a flight, flying" is from mid-15c. From the verb and the notion of "flapping as a wing does" comes the noun sense of "tent flap" (1810), which was extended to "strip of material sewn into a garment as a covering for buttons" or some other purpose (1844). Baseball fly ball attested by 1866. To do something on the fly is 1856, apparently from baseball.
When the catcher sees several fielders running to catch a ball, he should name the one he thinks surest to take it, when the others should not strive to catch the ball on the fly, but only, in case of its being missed, take it on the bound. ["The American Boys Book of Sports and Games," New York, 1864]
swan (n.): Old English swan "swan," from Proto-Germanic *swanaz "singer" (source also of Old Saxon swan, Old Norse svanr, Danish svane, Swedish svan, Middle Dutch swane, Dutch zwaan, Old High German swan, German Schwan), probably literally "the singing bird," from PIE root *swen- "to sing, make sound" (see sound (n.1)); thus related to Old English geswin "melody, song" and swinsian "to make melody."

In classical mythology, sacred to Apollo and to Venus. The singing of swans before death was alluded to by Chaucer (late 14c.), but swan-song (1831) is a translation of German Schwanengesang. The ancient Indo-European mythical swan-maiden so called by mythographers from 1829. Swan dive is recorded from 1898. A black swan was proverbial for "something extremely rare or non-existent" (late 14c.), after Juvenal ["Sat." vi. 164], but later they turned up in Australia (Chenopsis atratus).
"Do you say no worthy wife is to be found among all these crowds?" Well, let her be handsome, charming, rich and fertile; let her have ancient ancestors ranged about her halls; let her be more chaste than all the dishevelled Sabine maidens who stopped the war--a prodigy as rare upon the earth as a black swan! yet who could endure a wife that possessed all perfections? I would rather have a Venusian wench for my wife than you, O Cornelia, mother of the Gracchi, if, with all your virtues, you bring me a haughty brow, and reckon up Triumphs as part of your marriage portion. [Juvenal]
sinister (adj.): early 15c., "prompted by malice or ill-will, intending to mislead," from Old French senestre, sinistre "contrary, false; unfavorable; to the left" (14c.), from Latin sinister "left, on the left side" (opposite of dexter), of uncertain origin. Perhaps meaning properly "the slower or weaker hand" [Tucker], but Klein and Buck suggest it's a euphemism (see left (adj.)) connected with the root of Sanskrit saniyan "more useful, more advantageous." With contrastive or comparative suffix -ter, as in dexter (see dexterity).

The Latin word was used in augury in the sense of "unlucky, unfavorable" (omens, especially bird flights, seen on the left hand were regarded as portending misfortune), and thus sinister acquired a sense of "harmful, unfavorable, adverse." This was from Greek influence, reflecting the early Greek practice of facing north when observing omens. In genuine Roman auspices, the augurs faced south and left was favorable. Thus sinister also retained a secondary sense in Latin of "favorable, auspicious, fortunate, lucky."

Meaning "evil" is from late 15c. Used in heraldry from 1560s to indicate "left, to the left." Bend (not "bar") sinister in heraldry indicates illegitimacy and preserves the literal sense of "on or from the left side" (though in heraldry this is from the view of the bearer of the shield, not the observer of it).
gazette (n.): "newspaper," c. 1600, from French gazette (16c.), from Italian gazzetta, Venetian dialectal gazeta "newspaper," also the name of a small copper coin, literally "little magpie," from gazza; applied to the monthly newspaper (gazeta de la novità) published in Venice by the government, either from its price or its association with the bird (typical of false chatter), or both. First used in English 1665 for the paper issued at Oxford, whither the court had fled from the plague.

The coin may have been so called for its marking; Gamillscheg writes the word is from French gai (see jay). The general story of the origin of the word is broadly accepted, but there are many variations in the details:
We are indebted to the Italians for the idea of newspapers. The title of their gazettas was, perhaps, derived from gazzera, a magpie or chatterer; or, more probably, from a farthing coin, peculiar to the city of Venice, called gazetta, which was the common price of the newspapers. Another etymologist is for deriving it from the Latin gaza, which would colloquially lengthen into gazetta, and signify a little treasury of news. The Spanish derive it from the Latin gaza, and likewise their gazatero, and our gazetteer, for a writer of the gazette and, what is peculiar to themselves, gazetista, for a lover of the gazette. [Isaac Disraeli, "Curiosities of Literature," 1835]

Gazzetta It., Sp. gazeta, Fr. E. gazette; prop. the name of a Venetian coin (from gaza), so in Old English. Others derive gazette from gazza a magpie, which, it is alleged, was the emblem figured on the paper; but it does not appear on any of the oldest Venetian specimens preserved at Florence. The first newspapers appeared at Venice about the middle of the 16th century during the war with Soliman II, in the form of a written sheet, for the privilege of reading which a gazzetta (= a crazia) was paid. Hence the name was transferred to the news-sheet. [T.C. Donkin, "Etymological Dictionary of the Romance Languages" (based on Diez), 1864]

GAZETTE. A paper of public intelligence and news of divers countries, first printed at Venice, about the year 1620, and so called (some say) because una gazetta, a small piece of Venetian coin, was given to buy or read it. Others derive the name from gazza, Italian for magpie, i.e. chatterer.--Trusler. A gazette was printed in France in 1631; and one in Germany in 1715. [Haydn's "Dictionary of Dates," 1857]
whore (n.): 1530s spelling alteration (see wh-) of Middle English hore, from Old English hore "prostitute, harlot," from Proto-Germanic *horaz (fem. *horon-) "one who desires" (source also of Old Norse hora "adulteress," Danish hore, Swedish hora, Dutch hoer, Old High German huora "whore;" in Gothic only in the masc. hors "adulterer, fornicator," also as a verb, horinon "commit adultery"), from PIE *ka- "to like, desire," a base that has produced words in other languages for "lover" (source also of Latin carus "dear;" Old Irish cara "friend;" Old Persian kama "desire;" Sanskrit Kama, name of the Hindu god of love, kamah "love, desire," the first element in Kama Sutra).

Whore itself is perhaps a Germanic euphemism for a word that has not survived. The Old English vowel naturally would have yielded *hoor, which is the pronunciation in some dialects; it might have shifted by influence of Middle English homonym hore "physical filth, slime," also "moral corruption, sin," from Old English horh. The wh- form became current 16c. A general term of abuse for an unchaste or lewd woman (without regard to money) from at least c. 1200. Of male prostitutes from 1630s. Whore of Babylon is from Rev. xvii:1, 5, etc. In Middle English with occasional plural forms horen, heoranna.
The word, with its derivatives, is now avoided polite speech; its survival in literature, so as it survives, is due to the fact that it is a favorite word with Shakspere (who uses it, with its derivatives, 99 times) and is common in the authorized English version of the Bible ... though the American revisers recommended the substitution of harlot as less gross .... [Century Dictionary]
Some equivalent words in other languages also derive from sources not originally pejorative, such as Bohemian nevestka, diminutive of nevesta "bride;" Dutch deern, German dirne originally "girl, lass, wench;" also perhaps Old French pute, perhaps literally "girl," fem. of Vulgar Latin *puttus (but perhaps rather from Latin putidus "stinking;" see poontang). Welsh putain "whore" is from French, probably via Middle English. Among other languages, Greek porne "prostitute" is related to pernemi "sell," with an original notion probably of a female slave sold for prostitution; Latin meretrix is literally "one who earns wages" (source of Irish mertrech, Old English miltestre "whore, prostitute").

The vulgar Roman word was scortum, literally "skin, hide." Another term was lupa, literally "she-wolf" (preserved in Spanish loba, Italian lupa, French louve; see wolf (n.)). And of course there was prostituta, literally "placed in front," thus "publicly exposed," from the fem. past participle of prostituere (see prostitute (n.)). Another Old Norse term was skækja, which yielded Danish skøge, Swedish sköka; probably from Middle Low German schoke, which is perhaps from schode "foreskin of a horse's penis," perhaps with the sense of "skin" (compare Latin scortum) or perhaps via an intermediary sense of "vagina." Spanish ramera, Portuguese ramiera are from fem. form of ramero "young bird of prey," literally "little branch," from ramo "branch." Breton gast is cognate with Welsh gast "bitch," of uncertain origin. Compare also strumpet, harlot.

Old Church Slavonic ljubodejica is from ljuby dejati "fornicate," a compound from ljuby "love" + dejati "put, perform." Russian bljad "whore" derives from Old Church Slavonic bladinica, from bladu "fornication." Polish nierządnica is literally "disorderly woman." Sanskrit vecya is a derivation of veca- "house, dwelling," especially "house of ill-repute, brothel." Another term, pumccali, means literally "one who runs after men." Avestan jahika is literally "woman," but only of evil creatures; another term is kunairi, from pejorative prefix ku- + nairi "woman."