calumnious (adj.)youdaoicibaDictYouDict[calumnious 词源字典]
late 15c., from Latin calumniosus, from calumnia (see calumny). Related: Calumniously.[calumnious etymology, calumnious origin, 英语词源]
calumny (n.)youdaoicibaDictYouDict
"False & malicious misrepresentation of the words or actions of others, calculated to injure their reputation" [Fowler], mid-15c., from Middle French calomnie (15c.), from Latin calumnia "trickery, subterfuge, misrepresentation, malicious charge," from calvi "to trick, deceive," from PIE root *kel- (6) "to deceive, confuse" (cognates: Greek kelein "to bewitch, seduce, beguile," Gothic holon "to deceive," Old Norse hol "praise, flattery," Old English hol "slander," holian "to slander").
CalvaryyoudaoicibaDictYouDict
name of the mount of the Crucifixion, late 14c., from Latin Calvaria (Greek Kraniou topos), translating Aramaic gulgulta "place of the skull" (see Golgotha). Rendered literally in Old English as Heafodpannan stow. Latin Calvaria is related to calvus "bald" (see Calvin).
calve (v.)youdaoicibaDictYouDict
Old English cealfian, from cealf "calf" (see calf (n.1)). Of icebergs, 1837. Related: Calved; calving.
CalvinyoudaoicibaDictYouDict
John Calvin (1509-1564), Protestant leader, born Jean Caulvin, the surname related to French Chauvin (compare chauvinism), from Latin calvus "bald," from PIE *kle-wo- "bald."
Calvinism (n.)youdaoicibaDictYouDict
1560s, from John Calvin (1509-1564), Protestant reformer, + -ism. Alternative form Calvinian was in use in 1566. Generalized association with stern moral codes and predestination is attested since at least 1853. Related: Calvinist.
CalypsoyoudaoicibaDictYouDict
sea nymph in the "Odyssey," literally "hidden, hider" (perhaps originally a death goddess) from Greek kalyptein "to cover, conceal," from PIE *kel- "to cover, conceal, save," root of English Hell (see cell). The type of West Indian song is so called from 1934, but the origin of the name is obscure.
calyx (n.)youdaoicibaDictYouDict
1680s, from Latin calyx, from Greek kalyx "seed pod, husk, outer covering" (of a fruit, flower bud, etc.), from root of kalyptein "to cover, conceal" (see cell). The proper plural is calyces. Some sources connect the word rather with Greek kylix "drinking cup."
cam (n.1)youdaoicibaDictYouDict
"a projecting part of a rotating machinery," 1777, from Dutch cam "cog of a wheel," originally "comb;" cognate of English comb (n.). This might have combined with English camber "having a slight arch;" or the whole thing could be from camber.
cam (n.2)youdaoicibaDictYouDict
abbreviation of camera, by 1990.
camaraderie (n.)youdaoicibaDictYouDict
1840, from French camaraderie, from camarade "comrade" (see comrade).
camber (n.)youdaoicibaDictYouDict
1610s, nautical term, from Old French cambre, chambre "bent," from Latin camurum (nominative camur) "crooked, arched;" related to camera.
cambium (n.)youdaoicibaDictYouDict
1670s in botany sense, from Late Latin cambium "exchange," from Latin cambiare "change" (see change (v.)).
CambodiayoudaoicibaDictYouDict
from Kambu, legendary ancestor of the people. Related: Cambodian.
Cambrian (adj.)youdaoicibaDictYouDict
1650s, "from or of Wales or the Welsh," from Cambria, variant of Cumbria, Latinized derivation of Cymry, the name of the Welsh for themselves, from Old Celtic Combroges "compatriots." Geological sense (of rocks first studied in Wales and Cumberland) is from 1836.
cambric (n.)youdaoicibaDictYouDict
late 14c., from Kamerijk, Flemish form of Cambrai, city in northern France where the cloth was originally made, from Latin Camaracum. The modern form of the English word has elements from both versions of the name.
CambridgeyoudaoicibaDictYouDict
Old English Grontabricc (c.745) "Bridge on the River Granta" (a Celtic river name, of obscure origin). The change to Cante- and later Cam- was due to Norman influence. The river name Cam is a back-formation in this case, but Cam also was a legitimate Celtic river name, meaning "crooked."
camcorder (n.)youdaoicibaDictYouDict
1982, from camera and recorder.
cameyoudaoicibaDictYouDict
past tense of come.
camel (n.)youdaoicibaDictYouDict
Old English camel, perhaps via Old North French camel (Old French chamel, Modern French chameau), from Latin camelus, from Greek kamelos, from Hebrew or Phoenician gamal, perhaps related to Arabic jamala "to bear."

Another Old English word for the beast was olfend, apparently based on confusion of camels with elephants in a place and time when both were known only from travelers' vague descriptions. The Arabian have one hump (the lighter variety is the dromedary); the Bactrian have two.