-y (4) Look up -y at Dictionary.com
suffix indicating state, condition, or quality; also activity or the result of it (as in victory, history, etc.), via Anglo-French and Old French é, from Latin -ia, Greek -ia, from PIE *-a-, suffix forming abstract or collective nouns. It is etymologically identical with -ia and the second element in -cy, -ery, -logy, etc.
-y (3) Look up -y at Dictionary.com
suffix in pet proper names (such as Johnny, Kitty), first recorded in Scottish c.1400; according to OED it became frequent in English 15c.-16c. Extension to surnames seems to date from c.1940. Use with common nouns seems to have begun in Scottish with laddie (1546) and become popular in English due to Burns' poems, but the same formation appears to be represented much earlier in baby and puppy.
-y (1) Look up -y at Dictionary.com
noun suffix, in army, city, country, etc., from Old French -e, Latin -atus, -atum, past participle suffix of verbs of the first conjugation.
-y (2) Look up -y at Dictionary.com
adjective suffix, "full of or characterized by," from Old English -ig, from Proto-Germanic *-iga- (source also of Dutch, Danish, German -ig, Gothic -egs), from PIE -(i)ko-, adjectival suffix, cognate with elements in Greek -ikos, Latin -icus (see -ic). Originally added to nouns in Old English; used from 13c. with verbs, and by 15c. even with other adjectives (for example crispy).
-yer Look up -yer at Dictionary.com
agent noun suffix, variant of -ier used after a vowel or -w-.
-yl Look up -yl at Dictionary.com
chemical suffix used in forming names of radicals, from French -yle, from Greek hyle "wood," also "building stuff, raw material" (from which something is made), of unknown origin. The use in chemistry traces to the latter sense (except in methylene, where it means "wood").
It was introduced into chemical nomenclature by Liebig and Wohler when, in 1832, they used the term benzoyle for the radical which appeared to be the "essential material" of benzoic acid and related compounds. [Flood]
Y Look up Y at Dictionary.com
a late-developing letter in English. Called ipsilon in German, upsilon in Greek, the English name is of obscure origin. The sound at the beginning of yard, yes, yield, etc. is from Old English words with initial g- as in got and y- as in yet, which were considered the same sound and often transcribed as Ȝ, known as yogh. The system was altered by French scribes, who brought over the continental use of -g- and from the early 1200s used -y- and sometimes -gh- to replace Ȝ. As short for YMCA, etc., by 1915.
y'all (pron.) Look up y'all at Dictionary.com
by 1879, U.S. dialect abbreviation of you all (see you, and compare yins).
Children learn from the slaves some odd phrases ... as ... will you all do this? for, will one of you do this? ["Arthur Singleton" (Henry C. Knight), "Letters from the South and West," 1824]
We-all for "us" is attested by 1865; we-uns by 1864. Who-all attested from 1899.
y- Look up y- at Dictionary.com
perfective prefix, in yclept, etc.; a deliberate archaism, introduced by Spenser and his imitators, representing an authentic Middle English prefix, from Old English ge-, originally meaning "with, together" but later a completive or perfective element, from Proto-Germanic *ga- "together, with" (also a collective and intensive prefix), from PIE *kom "beside, near, by, with" (cognate with Sanskrit ja-, Latin com-, cum-; see com-). It is still living in German and Dutch ge-, and survives, disguised, in some English words (such as alike, aware, handiwork).

Among hundreds of Middle English words it formed are yfallen, yhacked ("completely hacked," probably now again useful), yknow, ymarried, ywrought.
yacht (n.) Look up yacht at Dictionary.com
1550s, yeaghe "a light, fast-sailing ship," from Norwegian jaght or early Dutch jaght, both from Middle Low German jacht, shortened form of jachtschip "fast pirate ship," literally "ship for chasing," from jacht "chase," from jagen "to chase, hunt," from Old High German jagon, from Proto-Germanic *yago-, from PIE root *yek- (2) "to hunt" (cognates: Hittite ekt- "hunting net"). Related: Yachting; yachtsman.
yack (v.) Look up yack at Dictionary.com
also yak, "to talk, to chatter," 1950, slang, probably short for yackety-yacking "talk" (1947), probably echoic (compare Australian slang yacker "talk, conversation," 1882). Related: Yacked; yacking.
yadda-yadda Look up yadda-yadda at Dictionary.com
"and so on," 1990s, of echoic origin (compare yatata "talk idly, chatter," 1940s; and yatter "to talk incessantly or idly," 1825).
yah (interj.) Look up yah at Dictionary.com
exclamation of defiance or dismissal, from 1812. Extended form yah-boo by 1910.
yahoo (n.) Look up yahoo at Dictionary.com
"a brute in human form," 1726, from the race of brutish human creatures in Swift's "Gulliver's Travels." "A made name, prob. meant to suggest disgust" [Century Dictionary]. "Freq. in mod. use, a person lacking cultivation or sensibility, a philistine; a lout; a hooligan" [OED]. The internet search engine so called from 1994.
Yahtzee (n.) Look up Yahtzee at Dictionary.com
dice game, 1957, proprietary (E.S. Lowe Co., N.Y.), apparently based on yacht.
Yahweh Look up Yahweh at Dictionary.com
1869, hypothetical reconstruction of the tetragrammaton YHWH (see Jehovah), based on the assumption that the tetragrammaton is the imperfective of Hebrew verb hawah, earlier form of hayah "was," in the sense of "the one who is, the existing."
yak (n.) Look up yak at Dictionary.com
"wild ox of central Asia," 1795, from Tibetan g-yag "male yak." Attested in French from 1791.
yak (v.) Look up yak at Dictionary.com
"laugh," 1938, variant of yuck (2); "talk idly," 1950, variant of yack. Related: Yakked; yakking.
Yakima Look up Yakima at Dictionary.com
Native American people of Washington State, 1852, perhaps from Sahaptin /iyakima/ "pregnant women."
yakuza (n.) Look up yakuza at Dictionary.com
traditional Japanese organized crime cartel, literally "eight-nine-three" (ya, ku, sa) the losing hand in the traditional baccarat-like Japanese card game Oicho-Kabu. The notion may be "good for nothing," or "bad luck" (such as that suffered by someone who runs afoul of them), or it may be a reference to the fact that a player who draws this hand requires great skill to win.
Yale Look up Yale at Dictionary.com
university in New Haven, Connecticut, U.S., founded 1701 as Collegiate School, renamed 1718 in honor of a gift from British merchant-philanthropist Elihu Yale (1649-1721). As a kind of lock, 1854, invented by U.S. mechanic Linus Yale Jr. (1821-1868). The surname is Welsh, from ial, and means "dweller at the fertile upland." Related: Yalie.
yam (n.) Look up yam at Dictionary.com
1580s, igname (current form by 1690s), from Portuguese inhame or Spanish igname, from a West African language (compare Fulani nyami "to eat;" Twi anyinam "species of yam"); the word in American and Jamaican English probably is directly from West African sources. The Malay name is ubi, whence German öbiswurzel.
yammer (v.) Look up yammer at Dictionary.com
late 15c., "to lament," probably from Middle Dutch jammeren and cognate Middle English yeoumeren, "to mourn, complain," from Old English geomrian "to lament," from geomor "sorrowful," probably of imitative origin. Cognate with Old Saxon jamar "sad, sorrowful," German Jammer "lamentation, misery." Meaning "to make loud, annoying noise" is attested from 1510s. Related: Yammered; yammering.
yang (n.) Look up yang at Dictionary.com
masculine or positive principle in Chinese philosophy, 1670s, from Mandarin yang, said to mean "male, daylight, solar," or "sun, positive, male genitals."
yank (v.) Look up yank at Dictionary.com
"to pull, jerk," 1822, Scottish, of unknown origin. Related: Yanked; yanking. The noun is 1818 in sense of "sudden blow, cuff;" 1856 (American English) as "a sudden pull."
Yank (n.) Look up Yank at Dictionary.com
abbreviated form of Yankee, 1778.
Yankee (n.) Look up Yankee at Dictionary.com
1683, a name applied disparagingly by Dutch settlers in New Amsterdam (New York) to English colonists in neighboring Connecticut. It may be from Dutch Janke, literally "Little John," diminutive of common personal name Jan; or it may be from Jan Kes familiar form of "John Cornelius," or perhaps an alteration of Jan Kees, dialectal variant of Jan Kaas, literally "John Cheese," the generic nickname the Flemings used for Dutchmen.
[I]t is to be noted that it is common to name a droll fellow, regarded as typical of his country, after some favorite article of food, as E[nglish] Jack-pudding, G[erman] Hanswurst ("Jack Sausage"), F[rench] Jean Farine ("Jack Flour"). [Century Dictionary, 1902, entry for "macaroni"]
Originally it seems to have been applied insultingly to the Dutch, especially freebooters, before they turned around and slapped it on the English. A less-likely theory (attested by 1832) is that it represents some southern New England Algonquian language mangling of English. In English a term of contempt (1750s) before its use as a general term for "native of New England" (1765); during the American Revolution it became a disparaging British word for all American natives or inhabitants. Contrasted with southerner by 1828. Shortened form Yank in reference to "an American" first recorded 1778. Latin-American form Yanqui attested in English by 1914 (in Mexican Spanish by 1835).
The rule observed in this country is, that the man who receives that name [Yankee] must come from some part north of him who gives it. To compensate us for giving each other nicknames, John Bull "lumps us all together," and calls us all Yankees. ["Who is a Yankee?" Massachusetts Spy, June 6, 1827]
Yankee Doodle (n.) Look up Yankee Doodle at Dictionary.com
popular tune of the American Revolution, apparently written c.1755 by British Army surgeon Dr. Richard Schuckburgh while campaigning with Amherst's force in upper New York during the French and Indian War. The original verses mocked the colonial troops (see Yankee) serving alongside the regulars, and the Doodle element might have been, or hinted at, the 18c. slang term for "penis." The song naturally was popular with British troops in the colonies during the Revolutionary War, but after the colonials began to win skirmishes with them in 1775, they took the tune as a patriotic prize and re-worked the lyrics. The current version seems to have been written in 1776 by Edward Bangs, a Harvard sophomore who also was a Minuteman.
yap (v.) Look up yap at Dictionary.com
1660s, "bark as a (small) dog," earlier as a noun, "yapping dog" (c.1600), probably of imitative origin. Compare verb yamph in same sense (1718). Originally in reference to dog sounds; meaning "to talk idle chatter" is first recorded 1886. Related: Yapped; yapping. As a noun, 1826 in reference to the sound; 1900, American English slang as "mouth."
yappy (adj.) Look up yappy at Dictionary.com
1909, from yap + -y (2).
yar Look up yar at Dictionary.com
growling sound, imitative, attested from c.1300.
Yarborough (n.) Look up Yarborough at Dictionary.com
in bridge/whist, a hand with no card above a nine, 1874, said to be so called for an unnamed Earl of Yarborough who bet 1,000 to 1 against its occurrence.
yard (n.1) Look up yard at Dictionary.com
"patch of ground around a house," Old English geard "fenced enclosure, garden, court; residence, house," from Proto-Germanic *gardaz (cognates: Old Norse garðr "enclosure, garden, yard;" Old Frisian garda, Dutch gaard, Old High German garto, German Garten "garden;" Gothic gards "house," garda "stall"), from PIE *ghor-to-, suffixed form of root *gher- (1) "to grasp, enclose," with derivatives meaning "enclosure" (cognates: Old English gyrdan "to gird," Sanskrit ghra- "house," Albanian garth "hedge," Latin hortus "garden," Phrygian -gordum "town," Greek khortos "pasture," Old Irish gort "field," Breton garz "enclosure, garden," and second element in Latin cohors "enclosure, yard, company of soldiers, multitude").

Lithuanian gardas "pen, enclosure," Old Church Slavonic gradu "town, city," and Russian gorod, -grad "town, city" belong to this group, but linguists dispute whether they are independent developments or borrowings from Germanic. As "college campus enclosed by the main buildings," 1630s. In railway usage, "ground adjacent to a train station or terminus, used for switching or coupling trains," 1827. Yard sale is attested by 1976.
yard (n.2) Look up yard at Dictionary.com
measure of length, Old English gerd (Mercian), gierd (West Saxon) "rod, staff, stick; measure of length," from West Germanic *gazdijo, from Proto-Germanic *gazdjo- "stick, rod" (cognates: Old Saxon gerda, Old Frisian ierde, Dutch gard "rod;" Old High German garta, German gerte "switch, twig," Old Norse gaddr "spike, sting, nail"), from PIE root *ghazdh-o- "rod, staff, pole" (cognates: Latin hasta "shaft, staff"). The nautical yard-arm retains the original sense of "stick."

Originally in Anglo-Saxon times a land measure of roughly 5 meters (a length later called rod, pole, or perch). Modern measure of "three feet" is attested from late 14c. (earlier rough equivalent was the ell of 45 inches, and the verge). In Middle English and after, the word also was a euphemism for "penis" (as in "Love's Labour's Lost," V.ii.676). Slang meaning "one hundred dollars" first attested 1926, American English. Middle English yerd (Old English gierd) also was "yard-land, yard of land," a varying measure but often about 30 acres or a quarter of a hide.
yard-arm (n.) Look up yard-arm at Dictionary.com
also yardarm, 1550s, from yard (n.2) in the nautical sense (attested from Old English) + arm (n.1). In 19c. British naval custom, it was permissible to begin drinking when the sun was over the yard-arm.
yardage (n.) Look up yardage at Dictionary.com
"aggregate number of yards," 1900 in sports, from yard (n.2) + -age.
yardbird (n.) Look up yardbird at Dictionary.com
"convict," 1956, from yard (n.1) + bird (n.1), from the notion of prison yards; earlier it meant "basic trainee" (World War II armed forces slang).
yardstick (n.) Look up yardstick at Dictionary.com
also yard-stick, 1797, from yard (n.2) + stick (n.).
yare (adj.) Look up yare at Dictionary.com
"ready, prepared," Old English gearo "ready, prepared, equipped," from gearwian "to equip, prepare" (related to gearwe "clothing, dress") from Proto-Germanic *garwian "to make, prepare, equip, ready, complete" (see gear (n.)). Cognate with German gar, Dutch gaar. Related: Yarely.
yarmulke (n.) Look up yarmulke at Dictionary.com
1903, from Yiddish yarmulke, from Polish jarmułka, originally "a skullcap worn by priests," perhaps ultimately from Medieval Latin almutia "cowl, hood."
yarn (n.) Look up yarn at Dictionary.com
Old English gearn "spun fiber, spun wool," from Proto-Germanic *garnan (cognates: Old Norse, Old High German, German garn, Middle Dutch gaern, Dutch garen "yarn"), from PIE root *ghere- "intestine, gut, entrail" (cognates: Old Norse gorn "gut," Sanskrit hira "vein; entrails," Latin hernia "rupture," Greek khorde "intestine, gut-string," Lithuanian zarna "gut"). The phrase to spin a yarn "to tell a story" is first attested 1812, from a sailors' expression, on notion of telling stories while engaged in sedentary work such as yarn-twisting.
yarrow (n.) Look up yarrow at Dictionary.com
plant, also known as milfoil, Old English gearwe "yarrow," from Proto-Germanic *garwo (cognates: Middle Dutch garwe, Old High German garawa, German Garbe), perhaps from a source akin to the root of yellow (adj.).
yaw (v.) Look up yaw at Dictionary.com
"to fall away from the line of a course," 1580s (as a noun 1540s), perhaps ultimately from Old Norse jaga, Old Danish jæge "to drive, chase," from Middle Low German jagen (see yacht).
yawl (n.) Look up yawl at Dictionary.com
type of ship's boat, 1660s, apparently from Middle Low German jolle or Dutch jol "a Jutland boat" (according to a 1708 source), of uncertain origin. Also borrowed into French (yole), Italian (jolo), Russian (yal).
yawn (v.) Look up yawn at Dictionary.com
c.1300, yenen, yonen, from Old English ginian, gionian "open the mouth wide, yawn, gape," from Proto-Germanic *gin- (cognates: Old Norse gina "to yawn," Dutch geeuwen, Old High German ginen, German gähnen "to yawn"), from PIE *ghai- "to yawn, gape" (cognates: Old Church Slavonic zijajo "to gape," Lithuanian žioju, Czech zivati "to yawn," Greek khainein, Latin hiare "to yawn, gape," Sanskrit vijihite "to gape, be ajar"). Modern spelling is from 16c. Related: Yawned; yawning.
yawn (n.) Look up yawn at Dictionary.com
"act of yawning," 1690s, from yawn (v.). Meaning "boring thing" is attested from 1889.
yawner (n.) Look up yawner at Dictionary.com
1680s, agent noun from yawn (v.). Meaning "boring thing" is 1942, American English colloquial (yawn (n.) in this sense is attested from 1889).
yawp (v.) Look up yawp at Dictionary.com
c.1300, yolpen, probably echoic variant of yelpen (see yelp). Related: Yawped; yawping. The noun, in reference to speech, is recorded from 1835, now used chiefly in conscious echo of Whitman (1855).
yaws (n.) Look up yaws at Dictionary.com
contagious skin disease, 1670s, from Carib yaya, the native name for it.
yay Look up yay at Dictionary.com
"this," as in yay big "this big," 1950s, perhaps from yea "yes" in its sense of "even, truly, verily." "a sort of demonstrative adverb used with adjectives of size, height, extent, etc., and often accompanied by a hand gesture indicating size" [DAS].