remorse (n.)youdaoicibaDictYouDict[remorse 词源字典]
late 14c., from Old French remors (Modern French remords), from Medieval Latin remorsum, noun use of neuter past participle of Latin remordere "to vex, disturb," literally "to bite back," from re- "back" (see re-) + mordere "to bite" (see mordant).

The sense evolution was via the Medieval Latin phrase remorsus conscientiæ (translated into Middle English as ayenbite of inwit). Middle English also had a verb, remord "to strike with remorse, touch with compassion, prick one's conscience."[remorse etymology, remorse origin, 英语词源]
remorseful (adj.)youdaoicibaDictYouDict
1590s, from remorse + -ful. Related: Remorsefully; remorsefulness.
remorseless (adj.)youdaoicibaDictYouDict
1590s, from remorse + -less. Related: Remorselessly; remorselessness.
remote (adj.)youdaoicibaDictYouDict
mid-15c., from Middle French remot or directly from Latin remotus "afar off, remote, distant in place," past participle of removere "move back or away" (see remove (v.)). Related: Remotely; remoteness. Remote control "fact of controlling from a distance" is recorded from 1904; as a device which allows this from 1920.
remoulade (n.)youdaoicibaDictYouDict
"type of French salad dressing," 1845, from French rémoulade (17c.), from remolat, a dialect word for "horseradish;" compare Italian ramolaccio "horseradish," by dissimilation from ramoraccio, from Latin armoracia.
remount (v.)youdaoicibaDictYouDict
also re-mount, late 14c., "put on horseback again," also "return to a former state," from Old French remonter "to climb up, ascend again," from re- (see re-) + monter (see mount (v.)). From late 15c. as "to go up again," 1620s as "to raise (something) up again." Related: Remounted; remounting.
removable (adj.)youdaoicibaDictYouDict
1530s, from remove (v.) + -able. Related: Removability.
removal (n.)youdaoicibaDictYouDict
1590s; see remove (v.) + -al (2).
remove (v.)youdaoicibaDictYouDict
early 14c., "move, take away, dismiss," from Old French removoir "move, stir; leave, depart; take away," from Latin removere "move back or away, take away, put out of view, subtract," from re- "back, away" (see re-) + movere "to move" (see move (v.)). Related: Removed; removing.
remove (n.)youdaoicibaDictYouDict
1550s, "act of removing," from remove (v.). Sense of "distance or space by which any thing is removed from another" is attested from 1620s.
removed (adj.)youdaoicibaDictYouDict
"distant in relationship" (by some expressed degree), 1540s, from past participle of remove (v.). Meaning "remote, separated, secluded" is from 1610s.
remunerate (v.)youdaoicibaDictYouDict
1520s, "pay for work or services," back-formation from remuneration or else from Latin remuneratus, past participle of remunerari (later remunerare) "repay, reward" (see remuneration). Related: Remunerated; remunerating.
remuneration (n.)youdaoicibaDictYouDict
c. 1400, from Middle French remuneration and directly from Latin remunerationem (nominative remuneratio) "a repaying, recompense," noun of action from past participle stem of remunerari "to pay, reward," from re- "back" (see re-) + munerari "to give," from munus (genitive muneris) "gift, office, duty" (see municipal).
remunerative (adj.)youdaoicibaDictYouDict
1620s, "inclined to remunerate," from remunerate + -ive. From 1670s as "rewarding;" 1859 as "profitable." Related: Remuneratively; remunerativeness.
Remy Martin (n.)youdaoicibaDictYouDict
from French Rémy Martin, proprietary name of a type of cognac, from the name of the founder (1724).
Renaissance (n.)youdaoicibaDictYouDict
"great period of revival of classical-based art and learning in Europe that began in the fourteenth century," 1840, from French renaissance des lettres, from Old French renaissance, literally "rebirth," usually in a spiritual sense, from renastre "grow anew" (of plants), "be reborn" (Modern French renaître), from Vulgar Latin *renascere, from Latin renasci "be born again, rise again, reappear, be renewed," from re- "again" (see re-) + nasci "be born" (Old Latin gnasci; see genus).

An earlier term for it was revival of learning (1785). In general usage, with a lower-case r-, "a revival" of anything that has long been in decay or disuse (especially of learning, literature, art), it is attested from 1872. Renaissance man is first recorded 1906.
renal (adj.)youdaoicibaDictYouDict
1650s, from French rénal and directly from Late Latin renalis "of or belonging to kidneys," from Latin ren (plural renes) "kidneys."
renascence (n.)youdaoicibaDictYouDict
"rebirth; state of being reborn," 1727, from renascent + -ence. As a native alternative to The Renaissance, first used in 1869 by Matthew Arnold. Related: Renascency (1660s).
renascent (adj.)youdaoicibaDictYouDict
1727, from Latin renascentem (nominative renascens), present participle of renasci "be born again" (see renaissance).
rend (v.)youdaoicibaDictYouDict
Old English rendan, hrendan "to tear, cut down," from West Germanic *randijan (cognates: Old Frisian renda "to cut, break," Middle Low German rende "anything broken," German Rinde "bark, crust"), probably related to rind. Related: Rended; rent; rending.