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render (v.)[render 词源字典]: late 14c., "repeat, say again," from Old French rendre "give back, present, yield" (10c.), from Vulgar Latin *rendere (formed by dissimilation or on analogy of its antonym, prendre "to take"), from Latin reddere "give back, return, restore," from red- "back" (see re-) + comb. form of dare "to give" (see date (n.1)).

Meaning "hand over, deliver" is recorded from late 14c.; "to return" (thanks, a verdict, etc.) is attested from late 15c.; meaning "represent, depict" is first attested 1590s. Irregular retention of -er in a French verb in English is perhaps to avoid confusion with native rend (v.) or by influence of a Middle English legalese noun render "a payment of rent," from French noun use of the infinitive. Related: Rendered; rendering.[render etymology, render origin, 英语词源]
render (n.): 1580s, agent noun from rend (v.).
rendering (n.): mid-15c., "action of restoring," verbal noun from render (v.). Meaning "a translation" is from 1640s; that of "extracting or melting of fat" is from 1792. Visual arts sense of "reproduction, representation" is from 1862.
rendezvous (n.): 1590s, "place for assembling of troops," from Middle French rendez-vous, noun use of rendez vous "present yourselves," from rendez, plural imperative of rendre "to present" (see render (v.)) + vous "you," from Latin vos, from PIE *wos- "you" (plural). General sense of "appointed place of meeting" is attested from 1590s.
rendezvous (v.): 1640s, from rendezvous (n.).
rendition (n.): c. 1600, "surrender of a place or possession," from obsolete French rendition "a rendering," noun of action from Old French rendre "to deliver, to yield" (see render (v.)). Meaning "translation" first recorded 1650s; that of "an acting, a performing" first recorded 1858, American English.
renegade (n.): 1580s, "apostate," probably (with change of suffix) from Spanish renegado, originally "Christian turned Muslim," from Medieval Latin renegatus, noun use of past participle of renegare "deny" (see renege). General sense of "turncoat" is from 1660s. The form renegate, directly from Medieval Latin, is attested in English from late 14c. As an adjective from 1705.
renege (v.): 1540s, "deny, renounce, abandon," from Medieval Latin renegare, from Latin re-, here probably an intensive prefix, + negare "deny" (see deny). Meaning "change one's mind" is from 1784. Related: Reneged; reneging.
renegotiate (v.): 1934, from re- "again" + negotiate. Related: Renegotiated; renegotiating.
renew (v.): late 14c., from re- "again" + Middle English newen "resume, revive, renew" (see new); formed on analogy of Latin renovare. Related: Renewed; renewing.
renewable (adj.): 1727, from renew + -able. In reference to energy sources, attested by 1971.
renewal (n.): 1680s, from renew + -al (2). Specific meaning "urban redevelopment" is from 1965, American English. Earlier noun was simply renew (early 15c.).
renin (n.): enzyme found in kidneys, 1894, from German Renin, from Latin renes "kidneys" + -in (2).
renminbi (n.): currency introduced 1948 in China, from Chinese renminbi, from renmin "people" + bi "currency."
rennet (n.1): "inner membrane of a calf's fourth stomach," c. 1400, probably from an unrecorded Old English *rynet, related to gerennan "cause to run together," because it makes milk run or curdle; from Proto-Germanic *rannijanan, causative of *renwanan "to run" (see run (v.)). Compare German rinnen "to run," gerinnen "to curdle."
rennet (n.2): variety of apple, 1560s, from French reinette, literally "little queen," diminutive of reine "queen," from Latin regina (see Regina).
rennin (n.): milk-curdling enzyme, 1897, from rennet + -in (2).
renounce (v.): late 14c., from Old French renoncier "give up, cede" (12c., Modern French renoncer), from Latin renuntiare "bring back word; proclaim; protest against, renounce," from re- "against" (see re-) + nuntiare "to report, announce," from nuntius "messenger" (see nuncio). Related: Renounced; renouncing.
renovate (v.): 1520s, back-formation from renovation, or else from Latin renovatus, past participle of renovare "renew, restore" (see renovation). Related: Renovated; renovating.
renovation (n.): c. 1400, renovacyoun "spiritual rebirth," also "rebuilding, reconstruction," from Middle French renovation (13c.), or directly from Latin renovationem (nominative renovatio) "a renewing, renewal; a rest," noun of action from past participle stem of renovare "renew, restore," from re- "again" (see re-) + novare "make new," from novus "new" (see new).