smallness (n.)youdaoicibaDictYouDict[smallness 词源字典]
late 14c., from small (adj.) + -ness.[smallness etymology, smallness origin, 英语词源]
smallpox (n.)youdaoicibaDictYouDict
acute, highly contagious disease, 1510s, small pokkes, as distinguished from great pox "syphillis;" from small-pock "pustule caused by smallpox" (mid-15c.); see small (adj.) + pox. Compare French petite vérole. Fatal in a quarter to a third of unvaccinated cases.
smarm (n.)youdaoicibaDictYouDict
1914, from colloquial verb smalm, smarm "to smear, bedaub" (the hair, with pomade), 1847, of unknown origin, perhaps somehow suggestive of the action. Verbal meaning "to smear with flattery" is from 1902.
smarmy (adj.)youdaoicibaDictYouDict
"smooth and sleek" (1909); "ingratiating, unctuous," 1924, from smarm + -y (2). Related: Smarmily; smarminess.
smart (v.)youdaoicibaDictYouDict
Old English smeortan "be painful," from Proto-Germanic *smarta- (cognates: Middle Dutch smerten, Dutch smarten, Old High German smerzan, German schmerzen "to pain," originally "to bite"), from PIE *smerd- "pain," an extension of the root *mer- (2) "to rub; to harm" (cognates: Greek smerdnos "terrible, dreadful," Sanskrit mardayati "grinds, rubs, crushes," Latin mordere "to bite"). Related: Smarted; smarting.
smart (adj.)youdaoicibaDictYouDict
late Old English smeart "painful, severe, stinging; causing a sharp pain," related to smeortan (see smart (v.)). Meaning "executed with force and vigor" is from c. 1300. Meaning "quick, active, clever" is attested from c. 1300, from the notion of "cutting" wit, words, etc., or else "keen in bargaining." Meaning "trim in attire" first attested 1718, "ascending from the kitchen to the drawing-room c. 1880" [Weekley]. For sense evolution, compare sharp (adj.).

In reference to devices, the sense of "behaving as though guided by intelligence" (as in smart bomb) first attested 1972. Smarts "good sense, intelligence," is first recorded 1968. Smart cookie is from 1948.
smart (n.)youdaoicibaDictYouDict
"sharp pain," c. 1200, from sharp (adj.). Cognate with Middle Dutch smerte, Dutch smart, Old High German smerzo, German Schmerz "pain."
smart aleck (n.)youdaoicibaDictYouDict
1865, of unknown origin, perhaps in reference to Aleck Hoag, notorious pimp, thief, and confidence man in New York City in early 1840s [Barnhart]. See smart (adj.). Related: Smart-alecky.
smart money (n.)youdaoicibaDictYouDict
"money bet by those in the know," 1926, from smart (adj.). The same phrase earlier meant "money paid to sailors, soldiers, workers, etc., who have been disabled while on the job" (1690s), from a noun derivative of smart (v.). Also "money paid to obtain the discharge of a recruit" (1760), hence "money paid to escape some unpleasant situation" (1818). Sometimes in legal use, "damages in excess of injury done."
smart-arseyoudaoicibaDictYouDict
see smart-ass.
smart-assyoudaoicibaDictYouDict
also smartass, 1960 (adj.), 1962 (n.), from smart (adj.) + ass (n.2).
smarten (v.)youdaoicibaDictYouDict
"to make smart, to spruce up, to improve appearance," 1786, from smart (adj.) in its sense of "spruce, trim" + -en (1). Related: Smartened; smartening.
smartly (adv.)youdaoicibaDictYouDict
early 13c., "vigorously," from smart (adj.) + -ly (2). Meaning "handsomely" is from 1836.
smartmouth (n.)youdaoicibaDictYouDict
1968, from smart (adj.) + mouth (n.).
smartness (n.)youdaoicibaDictYouDict
c. 1300, "severity," from smart (adj.) + -ness. From 1752 as "trimness," 1800 as "cleverness."
smarty (n.)youdaoicibaDictYouDict
"would-be witty or clever person," 1854, from smart (n.) + -y (3). Extended form smarty-pants first attested 1939.
smash (v.)youdaoicibaDictYouDict
1759, "break to pieces," earlier "kick downstairs" (c. 1700), probably of imitative origin (compare smack (v.), mash (v.), crush (v.)). Meaning "act with crushing force" is from 1813; that of "strike violently" is from 1835. Tennis sense is from 1882. Smash-and-grab (adj.) is first attested 1927.
smash (n.)youdaoicibaDictYouDict
1725, "hard blow," from smash (v.). Meaning "broken-up condition" is from 1798; that of "failure, financial collapse" is from 1839. Tennis sense is from 1882. Meaning "great success" is from 1923 ("Variety" headline, Oct. 16, in reference to Broadway productions of "The Fool" and "The Rise of Rosie O'Reilly").
smash-up (n.)youdaoicibaDictYouDict
"collision," 1841, from verbal phrase; see smash (v.) + up (adv.).
smashed (adj.)youdaoicibaDictYouDict
1819, "crushed," past participle adjective from smash (v.). Slang meaning "drunk" is from 1962.