sextet (n.) Look up sextet at Dictionary.com
1841, altered (by influence of German Sextett) from sestet.
sextile Look up sextile at Dictionary.com
1550s (adj.), "at a distance of 60 degrees;" 1590s (n.); from Latin sextilis (adj.) "the sixth," from sextus "sixth" (ordinal number; see Sextus).
sextillion (n.) Look up sextillion at Dictionary.com
1680s, from Latin sext-, comb. form of sex "six" (see six) + (m)illion. Compare billion. Related: Sextillionth.
sexton (n.) Look up sexton at Dictionary.com
c.1300, sekesteyn, "person in charge of the sacred objects of a church," from Old French segrestien, from Medieval Latin sacristanus (see sacristan). Sense of "custodian of a church" first recorded 1580s. Fem. forms sextress, sextrice are recorded 15c., but the usual form is sextoness (early 15c.).
sextuple (adj.) Look up sextuple at Dictionary.com
"sixfold," 1620s, from Latin sextus "sixth" (from sex "six;" see six) + -plus "more" (see plus).
sextuplet (n.) Look up sextuplet at Dictionary.com
1852, from adjective sextuple (1620s); patterned on triplet, etc.
Sextus Look up Sextus at Dictionary.com
masc. proper name, from Latin, properly "the sixth," originally denoting a sixth child, from sextus "sixth," from sex "six" (see six; also see Octavian).
sexual (adj.) Look up sexual at Dictionary.com
1650s, "of or pertaining to the fact of being male or female," from Late Latin sexualis "relating to sex," from Latin sexus (see sex (n.)). Meaning "pertaining to copulation or generation" is from 1766; sexual intercourse attested by 1778; sexual orientation by 1967; sexual harassment by 1975. Sexual revolution attested by 1962. Sexual politics is from 1970. Related: Sexually.
sexuality (n.) Look up sexuality at Dictionary.com
1789, "action or fact of being sexual;" see sexual + -ity. Meaning "capability of sexual feelings" is from 1879. Meaning "sexual identity" is by 1980.
sexualization (n.) Look up sexualization at Dictionary.com
1872, noun of action from sexualize.
sexualize (v.) Look up sexualize at Dictionary.com
1839, from sexual + -ize. Related: Sexualized; sexualizing.
sexy (adj.) Look up sexy at Dictionary.com
1905, from sex (n.) + -y (2). Originally "engrossed in sex;" sense of "sexually attractive" is 1923, first in reference to Valentino. An earlier word in this sense was sexful (1898). Related: Sexier; sexiest.
Seychelles Look up Seychelles at Dictionary.com
renamed 1756 in honor of French finance minister Jean Moreau de Séchelles; spelling altered 1794 by the English when they took the islands from France. Related: Seychellois.
sforzando (adj.) Look up sforzando at Dictionary.com
"with sudden energy or impulse," 1801, from Italian sforzando, gerundive of sforza "to force" (see effort).
sfumato (adj.) Look up sfumato at Dictionary.com
1847, from Italian sfumato, literally "smoked," from Latin fumus "smoke" (see fume (n.)).
sh (interj.) Look up sh at Dictionary.com
exclamation used to urge or request silence, 1847. The gesture of putting a finger to the lips to express silence is attested from Roman times. As a transitive verb from 1887; intransitive from 1925.
sh- Look up sh- at Dictionary.com
sound represented in Old English by -sc- (fisc "fish"), which originally was pronounced "-sk-" but which by late Old English had softened to "-sh-." Modern English words with -sc- mostly are imports (generally Scandinavian).

The "sh" sound did not exist in Old French, therefore French scribes after the Norman conquest often represented it with -ssh- in medial and final positions, and sch- in initial positions (schape, schamful, schaft for shape, shameful, shaft). But the spelling -sh- has been standard since Caxton, probably as a worn-down form of Middle English -sch-.

In some East Anglian texts from 14c.-15c., x- is used (xal, xulde for shall, should), which would have given the language a very different look had it prevailed, but the London-based sh- ended up as the standard form. The same Germanic sound has become, by natural evolution, modern German and Dutch sch-, Scandinavian sk-.
Shabbat (n.) Look up Shabbat at Dictionary.com
1934, from Hebrew shabbat (see Sabbath). Earlier in English as Shabbos (1870), from Yiddish shabes.
shabbify (v.) Look up shabbify at Dictionary.com
1866, from shabby + -ify. Related: Shabified; shabifying.
shabby (adj.) Look up shabby at Dictionary.com
1660s, of persons, "poorly dressed," with -y (2) + shab "a low fellow" (1630s), literally "scab" (now only dialectal in the literal sense, in reference to a disease of sheep), from Old English sceabb (the native form of the Scandinavian word that yielded Modern English scab; also see sh-). Similar formation in Middle Dutch schabbich, German schäbig "shabby."

Of clothes, furniture, etc., "of mean appearance, no longer new or fresh" from 1680s; meaning "inferior in quality" is from 1805. Figurative sense "contemptibly mean" is from 1670s. Related: Shabbily; shabbiness. Shabby-genteel "run-down but trying to keep up appearances, retaining in present shabbiness traces of former gentility," first recorded 1754. Related: Shabaroon "disreputable person," c.1700.
shack (n.) Look up shack at Dictionary.com
1878, American English and Canadian English, of unknown origin, perhaps from Mexican Spanish jacal, from Nahuatl (Aztecan) xacalli "wooden hut." Or perhaps a back-formation from dialectal English shackly "shaky, rickety" (1843), a derivative of shack, a dialectal variant of shake (v.). Another theory derives shack from ramshackle.

Slang meaning "house" attested by 1910. In early radio enthusiast slang, it was the word for a room or office set aside for wireless use, 1919, perhaps from earlier U.S. Navy use (1917). As a verb, 1891 in the U.S. West in reference to men who "hole up" for the winter; from 1927 as "to put up for the night;" phrase shack up "cohabit" first recorded 1935 (in Zora Neale Hurston).
shackle (n.) Look up shackle at Dictionary.com
Old English sceacel "shackle, fetter," probably also in a general sense "a link or ring of a chain," from Proto-Germanic *skakula- (cognates: Middle Dutch, Dutch schakel "link of a chain, ring of a net," Old Norse skökull "pole of a carriage"), of uncertain origin. According to OED, the common notion of "something to fasten or attach" makes a connection with shake unlikely. Figurative use from early 13c. Related: Shackledom "marriage" (1771); shackle-bone "the wrist" (1570s).
shackle (v.) Look up shackle at Dictionary.com
mid-15c., from shackle (n.). Figurative use from 1560s. Related: Shackled; shackling.
shacklebolt (n.) Look up shacklebolt at Dictionary.com
"bolt which passes through the eyes of a shackle," 1680s, from shackle (n.), which has been used specifically of the bar of a padlock from mid-14c., + bolt (n.).
shad (n.) Look up shad at Dictionary.com
Old English sceadd "shad," important food fish in the Atlantic, possibly from Scandinavian (Norwegian dialectal skadd "small whitefish"); but compare Welsh ysgadan (plural), Irish and Gaelic sgadan "herring." OED says Low German schade may be from English.

Its importance suggested by its use in forming the common names of U.S. East Coast plants and wildlife whose active period coincides with the running of the shad up rivers, such as shad-bird, shad-bush, shad-flower, shad-fly, shad-frog. From the shape of the fish comes shad-bellied, 1832 in reference to persons, "having little abdominal protuberance;" of coats (1842) "sloping apart in front, cut away," especially in reference to the characteristic garb of male Quakers.
shade (n.) Look up shade at Dictionary.com
Middle English schade, Kentish ssed, from late Old English scead "partial darkness; shelter, protection," also partly from sceadu "shade, shadow, darkness; shady place, arbor, protection from glare or heat," both from Proto-Germanic *skadwaz (cognates: Old Saxon skado, Middle Dutch scade, Dutch schaduw, Old High German scato, German Schatten, Gothic skadus), from PIE *skot-wo-, from root *skot- "dark, shade" (cognates: Greek skotos "darkness, gloom," Albanian kot "darkness," Old Irish scath, Old Welsh scod, Breton squeut "darkness," Gaelic sgath "shade, shadow, shelter").

Figurative use in reference to comparative obscurity is from 1640s. Meaning "a ghost" is from 1610s; dramatic (or mock-dramatic) expression "shades of _____" to invoke or acknowledge a memory is from 1818, from the "ghost" sense. Meaning "lamp cover" is from 1780. Sense of "window blind" first recorded 1845. Meaning "cover to protect the eyes" is from 1801. Meaning "grade of color" first recorded 1680s; that of "degree or gradiation of darkness in a color" is from 1680s (compare nuance, from French nue "cloud"). Meaning "small amount or degree" is from 1782.
shade (v.) Look up shade at Dictionary.com
c.1400, "to screen from light or heat," from shade (n.). From 1520s as "to cast a shadow over;" figurative use in this sense from 1580s. Sense in painting and drawing is from 1797. In reference to colors, 1819. Related: Shaded; shading.
shade-tree (n.) Look up shade-tree at Dictionary.com
1806, from shade (n.) + tree (n.).
shades (n.) Look up shades at Dictionary.com
"sunglasses," 1958, American English, plural of shade (n.).
shadow (n.) Look up shadow at Dictionary.com
Old English sceadwe, sceaduwe "the effect of interception of sunlight, dark image cast by someone or something when interposed between an object and a source of light," oblique cases ("to the," "from the," "of the," "in the") of sceadu (see shade (n.)). Shadow is to shade (n.) as meadow is to mead (n.2). Similar formation in Old Saxon skado, Middle Dutch schaeduwe, Dutch schaduw, Old High German scato, German schatten, Gothic skadus "shadow, shade."

From mid-13c. as "darkened area created by shadows, shade." From early 13c. in sense "anything unreal;" mid-14c. as "a ghost;" late 14c. as "a foreshadowing, prefiguration." Meaning "imitation, copy" is from 1690s. Sense of "the faintest trace" is from 1580s; that of "a spy who follows" is from 1859.

As a designation of members of an opposition party chosen as counterparts of the government in power, it is recorded from 1906. Shadow of Death (c.1200) translates Vulgate umbra mortis (Ps. xxiii:4, etc.), which itself translates Greek skia thanatou, perhaps a mistranslation of a Hebrew word for "intense darkness." In "Beowulf," Gendel is a sceadugenga, a shadow-goer, and another word for "darkness" is sceaduhelm. To be afraid of one's (own) shadow "be very timorous" is from 1580s.
shadow (v.) Look up shadow at Dictionary.com
Middle English schadowen, Kentish ssedwi, from late Old English sceadwian "to protect as with covering wings" (also see overshadow), from the root of shadow (n.). Similar formation in Old Saxon skadoian, Dutch schaduwen, Old High German scatewen, German (über)schatten. From mid-14c. as "provide shade;" late 14c. as "cast a shadow over" (literal and figurative), from early 15c. as "darken" (in illustration, etc.). Meaning "to follow like a shadow" is from c.1600 in an isolated instance; not attested again until 1872. Related: Shadowed; shadowing.
shadow boxing (n.) Look up shadow boxing at Dictionary.com
1906; see shadow (n.) + box (v.2). To shadow-box (v.) is attested from 1932. Shadow-fight is attested from 1768; also see sciamachy.
shadow-box (n.) Look up shadow-box at Dictionary.com
protective display case, 1892, from shadow (n.) + box (n.1).
shadow-figure (n.) Look up shadow-figure at Dictionary.com
"silhouette," 1851, from shadow (n.) + figure (n.).
shadowland (n.) Look up shadowland at Dictionary.com
also shadow-land, 1821, "abode of ghosts and spirits," from shadow (n.) + land (n.). From 1923 as "indeterminate place."
shadowless (n.) Look up shadowless at Dictionary.com
1630s, from shadow (n.) + -less.
shadowy (adj.) Look up shadowy at Dictionary.com
late 14c., shadewy, "full of shadows," also "transitory, fleeting, unreal;" see shadow (n.) + -y (2). From 1797 as "faintly perceptible." Related: Shadowiness. Old English had sceadwig "shady."
Shadrach Look up Shadrach at Dictionary.com
name of one of the three children delivered from the "fiery furnace" in Dan. iii:26.
shady (adj.) Look up shady at Dictionary.com
"affording shade," 1570s; "protected by shade," 1590s; from shade (n.) + -y (2). Meaning "disreputable" (1862) probably is from earlier university slang sense of "of questionable merit, unreliable" (1848). Related: Shadily; shadiness. Old English had sceadlic "shady, 'shadely.'"
Shafi'i (n.) Look up Shafi'i at Dictionary.com
member of one of the four principal schools of Sunni Muslims, 1704, from Arabic, from ash-Shafi'i, cognomen of founder Abu Abdallah Muhammad ibn Idris (767-819). Related: Shafi'ite.
shaft (n.1) Look up shaft at Dictionary.com
Old English sceaft "long, slender rod, staff, pole; spear-shaft; spear," from Proto-Germanic *skaftaz (cognates: Old Norse skapt, Old Saxon skaft, Old High German scaft, German schaft, Dutch schacht, not found in Gothic), which some connect with a Germanic passive past participle of PIE root *(s)kep- "to cut, to scrape" (source of Old English scafan "to shave, scrape, polish") on notion of "tree branch stripped of its bark." But compare Latin scapus "shaft, stem, shank," Greek skeptron "a staff" (see scepter) which appear to be cognates.

Meaning "beam or ray" (of light, etc.) is attested from c.1300. Sense of "an arrow" is from c.1400; that of "a handle" from 1520s. Mechanical sense is from 1680s. Vulgar slang meaning "penis" first recorded 1719 on notion of "columnar part" (late 14c.); hence probably shaft (v.) and the related noun sense "act of unfair treatment" (1959), though some early sources insist this is from the notion of a "wound."
shaft (n.2) Look up shaft at Dictionary.com
"long, narrow passage sunk into the earth," early 15c., probably from shaft (n.1) on notion of "long and cylindrical," perhaps as a translation of cognate Low German schacht in this sense (Grimm's suggestion, though OED is against it). Or it may represent a separate (unrecorded) development in Old English directly from Proto-Germanic *skaftaz if the original sense is "scrape, dig." The slang sense of shaft (n.1) is punned upon in country music song "She Got the Gold Mine, I Got the Shaft," a hit for Jerry Reed in 1982.
shaft (v.) Look up shaft at Dictionary.com
"treat cruelly and unfairly," by 1958, perhaps from shaft (n.1) with overtones of sodomy. Related: Shafted; shafting.
shag (n.) Look up shag at Dictionary.com
1590s, "cloth having a velvet nap on one side," perhaps from Old English sceacga "rough matted hair or wool," from Proto-Germanic *skagjan (cognates: Old Norse skegg, Swedish skägg "beard"), perhaps related to Old High German scahho "promontory," Old Norse skagi "a cape, headland," with a connecting sense of "jutting out, projecting." But the word appears to be missing in Middle English. Of tobacco, "cut in fine shreds," it is recorded from 1789; of carpets, rugs, etc., from 1946.
shag (v.1) Look up shag at Dictionary.com
"copulate with," 1788, probably from obsolete verb shag (late 14c.) "to shake, waggle," which probably is connected to shake (v.).
And þe boot, amydde þe water, was shaggid. [Wyclif]
Compare shake it in U.S. blues slang from 1920s, ostensibly with reference to dancing. But compare shag (v.), used from 1610s in a sense "to roughen or make shaggy." Also the name of a dance popular in U.S. 1930s and '40s. Related: Shagged; shagging.
shag (v.2) Look up shag at Dictionary.com
in baseball, "to go after and catch" (fly balls), by 1913, of uncertain origin. Century Dictionary has it as a secondary sense of a shag (v.) "to rove about as a stroller or beggar" (1851), which is perhaps from shack (n.) "disreputable fellow" (1680s), short for shake-rag, an old term for a beggar.
shagbark (n.) Look up shagbark at Dictionary.com
type of hickory, 1751, from shag (n.) + bark (n.1).
shaggy (adj.) Look up shaggy at Dictionary.com
"rough, coarse, unkempt," 1590s, from shag (n.) + -y (2). Related: Shaggily; shagginess. Earlier was shagged, from Old English sceacgede "hairy;" compare Old Norse skeggjaðr, Danish skægget "bearded." The shaggy-dog story as a type of joke is attested from 1944, perhaps from vaudeville.
shah (n.) Look up shah at Dictionary.com
title of the king of Persia, 1560s, shaw, from Persian shah, shortened from Old Persian xšayathiya "king," from Indo-Iranian *ksayati "he has power over, rules" from PIE *tke- "to gain control of, gain power over" (cognates: Sanskrit ksatram "dominion;" Greek krasthai "to acquire, get," kektesthai "to possess"). His wife is a shahbanu (from banu "lady"); his son is a shahzadah (from zadah "son").
shake (v.) Look up shake at Dictionary.com
Old English sceacan "move (something) quickly to and fro, brandish; move the body or a part of it rapidly back and forth;" also "go, glide, hasten, flee, depart" (related to sceacdom "flight"); of persons or parts of the body, "to tremble" especially from fever, cold, fear" (class VI strong verb; past tense scoc, past participle scacen), from Proto-Germanic *skakanan (cognates: Old Norse, Swedish skaka, Danish skage "to shift, turn, veer"). No certain cognates outside Germanic, but some suggest a possible connection to Sanskrit khaj "to agitate, churn, stir about," Old Church Slavonic skoku "a leap, bound," Welsh ysgogi "move."

Of the earth in earthquakes, c.1300. Meaning "seize and shake (someone or something else)" is from early 14c. In reference to mixing ingredients, etc., by shaking a container from late 14c. Meaning "to rid oneself of by abrupt twists" is from c.1200, also in Middle English in reference to evading responsibility, etc. Meaning "weaken, impair" is from late 14c., on notion of "make unstable."

To shake hands dates from 1530s. Shake a (loose) leg "hurry up" first recorded 1904; shake a heel (sometimes foot) was an old way to say "to dance" (1660s); to shake (one's) elbow (1620s) meant "to gamble at dice." Phrase more _____ than you can shake a stick at is attested from 1818, American English. To shake (one's) head as a sign of disapproval is recorded from c.1300.