scared (adj.)youdaoicibaDictYouDict[scared 词源字典]
past participle adjective from scare (v.). Scared stiff first recorded 1900; scared shitless is from 1936. Scaredy-cat "timid person" first attested 1906.[scared etymology, scared origin, 英语词源]
scaremonger (n.)youdaoicibaDictYouDict
also scare-monger, 1888, from scare (n.) + monger (n.).
scarf (v.)youdaoicibaDictYouDict
"eat hastily," 1960, U.S. teen slang, originally a noun meaning "food, meal" (1932), perhaps imitative, or from scoff (attested in a similar sense from 1846). Or perhaps from a dialectal survival of Old English sceorfan "to gnaw, bite" (see scarf (n.2)); a similar word is found in a South African context in the 1600s. Related: Scarfed; scarfing.
scarf (n.1)youdaoicibaDictYouDict
"band of silk, strip of cloth," 1550s, "a band worn across the body or over the shoulders," probably from Old North French escarpe "sash, sling," which probably is identical with Old French escherpe "pilgrim's purse suspended from the neck," perhaps from Frankish *skirpja or some other Germanic source (compare Old Norse skreppa "small bag, wallet, satchel"), or from Medieval Latin scirpa "little bag woven of rushes," from Latin scirpus "rush, bulrush," of unknown origin [Klein]. As a cold-weather covering for the neck, first recorded 1844. Plural scarfs began to yield to scarves early 18c., on model of half/halves, etc.
scarf (n.2)youdaoicibaDictYouDict
"connecting joint," late 13c., probably from a Scandinavian source (such as Old Norse skarfr "nail for fastening a joint," Swedish skarf, Norwegian skarv). A general North Sea Germanic ship-building word (compare Dutch scherf), the exact relationship of all these is unclear. Also borrowed into Romanic (French écart, Spanish escarba); perhaps ultimately from Proto-Germanic *skarfaz (cognates: Old English sceorfan "to gnaw, bite"), from PIE *(s)ker- (1) "to cut" (see shear (v.)). Also used as a verb.
scarification (n.)youdaoicibaDictYouDict
c. 1400, "act of covering with scratches or slight cuts," from Old French scarification (14c.), from Late Latin scarificationem (nominative scarificatio), noun of action from past participle stem of scarificare, from Latin scarifare "scratch open," from Greek skariphasthai "to scratch an outline, sketch," from skariphos "pencil, stylus," from PIE root *skribh- "to cut, separate, sift" (see script (n.)).
scarify (v.)youdaoicibaDictYouDict
mid-15c., "make incisions in the bark of a tree," from Middle French scarifier "score, scrape" (leather or hide), 14c., from Late Latin scarificare (see scarification). The sense "cover with scars" (1680s) is a sense-shift from influence of scar (v.). Related: Scarified; scarifier; scarifying.
scarily (adv.)youdaoicibaDictYouDict
1845, "timidly;" 1967, "unnervingly," in a positive sense; see scary + -ly (2).
scarlatina (n.)youdaoicibaDictYouDict
1803, from Modern Latin scarlatina (Sydenham, 1676), from Italian scarlattina (Lancelotti, 1527), fem. of scarlattino (adj.), diminutive of scarlatto "scarlet" (see scarlet). It is a synonym for scarlet fever, not a milder form of it. Related: Scarlattinal.
scarlet (n.)youdaoicibaDictYouDict
mid-13c., "rich cloth" (often, but not necessarily, bright red), from a shortened form of Old French escarlate "scarlet (color), top-quality fabric" (12c., Modern French écarlate), from Medieval Latin scarlatum "scarlet, cloth of scarlet" (also source of Italian scarlatto, Spanish escarlate), probably via a Middle Eastern source (compare Arabic siqillat "fine cloth"), from Medieval Greek and ultimately from Late Latin sigillatus "clothes and cloth decorated with small symbols or figures," literally "sealed," past participle of sigillare, from the root of sign (n.).

In English as the name of a color, attested from late 14c. As an adjective from c. 1300. Scarlet lady, etc. (Isa. i:18, Rev. xvii:1-5) is from notion of "red with shame or indignation." Scarlet fever is from 1670s, so called for its characteristic rash. Scarlet oak, a New World tree, attested from 1590s. Scarlet letter traces to Hawthorne's story (1850). German Scharlach, Dutch scharlaken show influence of words cognate with English lake (n.2).
scarp (n.)youdaoicibaDictYouDict
"steep slope," 1580s, from Italian scarpa "slope," probably from a Germanic source, perhaps Gothic skarpo "pointed object," from Proto-Germanic *skarpa- "cutting, sharp" (cognates: Middle High German schroffe "sharp rock, crag," Old English scræf "cave, grave"), from PIE *(s)ker- (1) "to cut" (see shear (v.)).
scarred (adj.)youdaoicibaDictYouDict
mid-15c., past participle adjective from scar (v.). Transferred use by c. 1600.
scary (adj.)youdaoicibaDictYouDict
also scarey, "terrifying," 1580s, from scare (n.) + -y (2). Meaning "easily frightened, subject to scares" is from 1800. Related: Scarier; scariest.
scat (interj.)youdaoicibaDictYouDict
"go away!" 1838, from expression quicker than s'cat "in a great hurry," probably representing a hiss followed by the word cat.
scat (n.1)youdaoicibaDictYouDict
"nonsense patter sung to jazz," 1926, probably of imitative origin, from one of the syllables used. As a verb, 1935, from the noun. Related: Scatting.
scat (n.2)youdaoicibaDictYouDict
"filth, dung," 1950, from Greek stem skat- "dung" (see scatology).
scathe (v.)youdaoicibaDictYouDict
c. 1200, from Old Norse skaða "to hurt, harm, damage, injure," from Proto-Germanic *skath- (cognates: Old English sceaþian "to hurt, injure," Old Saxon skathon, Old Frisian skethia, Middle Dutch scaden, Dutch schaden, Old High German scadon, German schaden, Gothic scaþjan "to injure, damage"), from PIE root *sket- "to injure." Only cognate outside Germanic seems to be in Greek a-skethes "unharmed, unscathed."

It survives mostly in its negative form, unscathed, and in figurative meaning "sear with invective or satire" (1852, usually as scathing) which developed from the sense of "scar, scorch" used by Milton in "Paradise Lost" i.613 (1667).
scathing (adj.)youdaoicibaDictYouDict
1794 in literal sense, present participle adjective from scathe (v.). Of words, speech, etc., from 1852. Related: Scathingly.
scatology (n.)youdaoicibaDictYouDict
"obscene literature," 1876, with -logy "treatise, study" + Greek skat-, stem of skor (genitive skatos) "excrement," from PIE *sker- "excrement, dung" (cognates: Latin stercus "dung"), literally "to cut off;" see shear (v.), and compare shit (v.). Related: Scatological (1886).
scatter (v.)youdaoicibaDictYouDict
mid-12c. (transitive), possibly a northern English variant of Middle English schateren (see shatter), reflecting Norse influence. Intransitive sense from early 15c. Related: Scattered; scattering. As a noun from 1640s.