aidyoudaoicibaDictYouDict[aid 词源字典]
aid: [15] Aid comes ultimately from the same source as adjutant (which originally meant simply ‘assistant’). Latin juvāre became, with the addition of the prefix ad- ‘to’, adjuvāre ‘give help to’; from its past participle adjutus was formed a new verb, adjūtāre, denoting repeated action, and this passed into Old French as aïdier, the source of English aid.
=> adjutant, jocund[aid etymology, aid origin, 英语词源]
aid (n.)youdaoicibaDictYouDict
early 15c., "war-time tax," also "help, support, assistance," from Old French aide, earlier aiudha "aid, help, assistance" (9c.), from Late Latin adjuta, from fem. past participle of Latin adiuvare (past participle adiutus) "to give help to," from ad- "to" (see ad-) + iuvare "to help" (see adjutant). Meaning "thing by which assistance is given" is recorded from c. 1600. Meaning "material help given by one country to another" is from 1940.
aid (v.)youdaoicibaDictYouDict
c. 1400, "to assist, help," from Old French aidier "help, assistance," from Latin adiutare, frequentative of adiuvare (past participle adiutus) "give help to" (see adjutant). Related: Aided; aiding.