earnyoudaoicibaDictYouDict[earn 词源字典]
earn: [OE] The underlying sense of earn is ‘gain as a result of one’s labour’. It comes from a prehistoric West Germanic verb *aznōjan, which was based on the noun *aznu ‘work, labour’. This seems often to have been used specifically for ‘work in the fields’, for several other related forms in the Germanic languages, such as German ernte and Gothic asans, denote ‘harvest’, which in some cases has been metaphorically extended to apply to ‘autumn’.
[earn etymology, earn origin, 英语词源]
employyoudaoicibaDictYouDict
employ: [15] Essentially, employ is the same word as imply [14] and implicate [16]. All three come ultimately from Latin implicāre ‘enfold, involve’, a compound verb formed from the prefix in- ‘in’ and plicāre ‘fold’ (source of English ply and related to English fold). This passed into Old French as emplier, which in turn was transmitted into English as imply; this originally retained the literal sense ‘enfold’, and it was only gradually that the metaphorical ‘involve as a necessary condition’ developed.

However, Old French emplier had a variant empleier, later emploier, which took a slightly different semantic route – from simply ‘involve’ to ‘involve in or apply to a particular purpose’. This was the sense in which English acquired it as employ.

=> fold, implicate, imply, ply
apposite (adj.)youdaoicibaDictYouDict
1620s, "well-put or applied, appropriate," from Latin appositus "contiguous, neighboring;" figuratively "fit, proper, suitable," past participle of apponere "apply to, put near," from ad- "near" (see ad-) + ponere "to place" (past participle positus; see position (n.)).
fox (n.)youdaoicibaDictYouDict
Old English fox "a fox," from Proto-Germanic *fuhsaz "fox" (cognates Old Saxon vohs, Middle Dutch and Dutch vos, Old High German fuhs, German Fuchs, Old Norse foa, Gothic fauho), from Proto-Germanic *fuh-, from PIE *puk- "tail" (source also of Sanskrit puccha- "tail").

The bushy tail also inspired words for "fox" in Welsh (llwynog, from llwyn "bush"); Spanish (raposa, from rabo "tail"); and Lithuanian (uodegis, from uodega "tail"). Metaphoric extension to "clever person" was in late Old English. Meaning "sexually attractive woman" is from 1940s; but foxy in this sense is recorded from 1895. A fox-tail was anciently one of the badges of a fool (late 14c.).

A late Old English translation of the Medicina de Quadrupedibus of Sextus Placitus advises, for women "who suffer troubles in their inward places, work for them into a salve a foxes limbs and his grease, with old oil and with tar; apply to the womens places; quickly it healeth the troubles." It also recommends, for sexual intercourse without irritation, "the extremest end of a foxes tail hung upon the arm." Rubbing a fox's testicles on warts was supposed a means to get rid of them.
psychosomatic (adj.)youdaoicibaDictYouDict
1847, "pertaining to the relation between mind and body," from Greek psykhe- "mind" (see psyche) + somatikos, from soma (genitive somatos) "body" (see somato-). Applied from 1938 to physical disorders with psychological causes. Etymologically it could as easily apply to emotional disorders with physical causes, but it is rarely used as such.
quick (adj.)youdaoicibaDictYouDict
Old English cwic "living, alive, animate," and figuratively, of mental qualities, "rapid, ready," from Proto-Germanic *kwikwaz (cognates: Old Saxon and Old Frisian quik, Old Norse kvikr "living, alive," Dutch kwik "lively, bright, sprightly," Old High German quec "lively," German keck "bold"), from PIE root *gweie- (1) "to live" (see bio-). Sense of "lively, swift" developed by late 12c., on notion of "full of life."
NE swift or the now more common fast may apply to rapid motion of any duration, while in quick (in accordance with its original sense of 'live, lively') there is a notion of 'sudden' or 'soon over.' We speak of a fast horse or runner in a race, a quick starter but not a quick horse. A somewhat similar feeling may distinguish NHG schnell and rasch or it may be more a matter of local preference. [Buck]
Of persons, "mentally active," from late 15c. Also in Middle English used of soft soils, gravel pits, etc. where the ground is shifting and yielding (mid-14c., compare quicksand). As an adverb from c. 1300. To be quick about something is from 1937. Quick buck is from 1946, American English. Quick-change artist (1886) originally was an actor expert in playing different roles in the same performance of a show. Quick-witted is from 1520s.
quiz (n.)youdaoicibaDictYouDict
"brief examination of a student on some subject," 1852, perhaps from quiz (v.), or from slang quiz "odd person" (1782, perhaps originally university slang), via the notion of "schoolboy prank or joke played at the expense of a person deemed a quiz" (a noun sense attested frequently 1840s).
A Quiz, in the common acceptation of the word, signifies one who thinks, speaks, or acts differently from the rest of the world in general. But, as manners and opinions are as various as mankind, it will be difficult to say who shall be termed a Quiz, and who shall not: each person indiscriminately applying the name of Quiz to every one who differs from himself .... ["The London Magazine," November, 1783]
According to OED, the anecdote that credits this word to a bet by the Dublin theater-manager Daly or Daley that he could coin a word is regarded by authorities as "doubtful" and the first record of it appears to be in 1836 (in Smart's "Walker Remodelled"; the story is omitted in the edition of 1840).
The word Quiz is a sort of a kind of a word
That people apply to some being absurd;
One who seems, as t'were oddly your fancy to strike
In a sort of a fashion you somehow don't like
A mixture of odd, and of queer, and all that
Which one hates, just, you know, as some folks hate a cat;
A comical, whimsical, strange, droll -- that is,
You know what I mean; 'tis -- in short, -- 'tis a quiz!

[from "Etymology of Quiz," Charles Dibdin, 1842]
yield (v.)youdaoicibaDictYouDict
Old English gieldan (West Saxon), geldan (Anglian) "to pay, pay for; reward, render; worship, serve, sacrifice to" (class III strong verb; past tense geald, past participle golden), from Proto-Germanic *geldan "pay" (cognates: Old Saxon geldan "to be worth," Old Norse gjaldo "to repay, return," Middle Dutch ghelden, Dutch gelden "to cost, be worth, concern," Old High German geltan, German gelten "to be worth," Gothic fra-gildan "to repay, requite"). This is from PIE *gheldh- "to pay," a root found only in Balto-Slavic and Germanic (and Old Church Slavonic žledo, Lithuanian geliuoti might be Germanic loan-words).

"[T]he only generally surviving senses on the Continent are 'to be worth; to be valid, to concern, apply to,' which are not represented at all in the English word" [OED]; sense development in English comes via use of this word to translate Latin reddere, French rendre. Sense of "give in return for labor or capital invested" is from early 14c. Intransitive sense of "give oneself up, submit, surrender (to a foe)" is from c. 1300. Related to Middle Low German and Middle Dutch gelt, Dutch geld, German Geld "money." Related: Yielded; yielding.