redeemyoudaoicibaDictYouDict[redeem 词源字典]
redeem: [15] The -deem is not the same word as deem (which is related to doom). In fact, there never was a true -deem in it. It comes from Latin emere ‘take, buy’ (source also of English example, prompt, etc), which when combined with the prefix re- ‘again, back’ had a d grafted into it to produce redimere ‘buy back’. English probably acquired it via French rédimer.
=> example, prompt, sample[redeem etymology, redeem origin, 英语词源]
redeem (v.)youdaoicibaDictYouDict
early 15c., "buy back, ransom," from Middle French redemer "buy back," from Latin redimere (see redemption). Theological sense of "deliver from sin and spiritual death" is from c. 1500. Meaning "make amends for" is from 1520s. Sense of "make good" (a promise, obligation, etc.) is from 1840. Related: Redeemed; redeeming.