英语词源字典 - 在线词源网站

clamorous (adj.)[clamorous 词源字典]: c. 1400, from Middle French clamoreux or directly from Medieval Latin clamorosus, from Latin clamor "a shout" (see clamor (n.)). Related: Clamorously; clamorousness.[clamorous etymology, clamorous origin, 英语词源]
clamour: chiefly British English spelling of clamor (q.v.); for spelling, see -or. Related: Clamoured; clamouring; clamourous.
clamp (n.): device for fastening, c. 1300, probably from clamb, perhaps originally past tense of climb (v.), or from Middle Dutch clampe (Dutch klamp), from West Germanic *klamp- "clamp, cleat;" cognate with Middle Low German klampe "clasp, hook," Old High German klampfer "clip, clamp;" also probably related to Middle Dutch klamme "a clamp, hook, grapple," Danish klamme "a clamp, cramp," Old English clamm "fetter;" see clam (n.).
clamp (v.): "to fasten with a clamp," 1670s, from clamp (n.). Related: Clamped; clamping.
clamp-down (n.): also clampdown, 1940 in the figurative sense, from verbal phrase clamp down "use pressure to keep down" (1924). The verbal phrase in the figurative sense is recorded from 1941. See clamp (v.) + down (adv.).
clan (n.): early 15c., from Gaelic clann "family, stock, offspring," akin to Old Irish cland "offspring, tribe," both from Latin planta "offshoot" (see plant (n.)). The Goidelic branch of Celtic (including Gaelic) had no initial p-, so it substituted k- or c- for Latin p-. The same Latin word in (non-Goidelic) Middle Welsh became plant "children."
clandestine (adj.): 1560s, from Latin clandestinus "secret, hidden," from clam "secretly," from adverbial derivative of base of celare "to hide" (see cell), perhaps on model of intestinus "internal." Related: Clandestinely. As a noun form, there is awkward clandestinity (clandestineness apparently being a dictionary word).
clang (v.): 1570s, echoic (originally of trumpets and birds), akin to or from Latin clangere "resound, ring," and Greek klange "sharp sound," from PIE *klang-, nasalized form of root *kleg- "to cry, sound." Related: Clanged; clanging.
clang (n.): 1590s, from clang (v.).
clangor (n.): 1590s, from Latin clangor "sound of trumpets (Virgil), birds (Ovid), etc.," from clangere "to clang," echoic (compare clang).
clangorous (adj.): 1712, from Medieval Latin clangorosus, from Latin clangor, or else from clangor + -ous. Related: Clangorously; clangorousness.
clank (v.): 1610s, perhaps echoic, perhaps a blend of clang (v.) and clink (v.), perhaps from a Low German source (compare Middle Dutch clank, Dutch klank, Old High German klanc, Middle Low German klank, German Klang).
clank (n.): 1650s, from clank (v.). Reduplicated form clankety-clank attested from 1895.
clannish (adj.): "disposed to adhere closely to one another," 1747, from clan + -ish. Related: Clannishly; clannishness.
clansman (n.): 1810, "member of a clan," from genitive of clan + man (n.).
clap (v.): Old English clæppan "to throb, beat," common Germanic, echoic (cognate with Old Frisian klapa "to beat," Old Norse klappa, Old High German klaphon, German klappen, Old Saxon klapunga). Meaning "to strike or knock" is from c. 1300. Meaning "to make a sharp noise" is late 14c. Of hands, to beat them together to get attention or express joy, from late 14c. To clap (someone) on the back is from 1520s. Related: Clapped; clapping.
clap (n.1): "loud noise," c. 1200, from clap (v.). Of thunder, late 14c. Meaning "sudden blow" is from c. 1400; meaning "noise made by slapping the palms of the hands together" is from 1590s.
clap (n.2): "gonorrhea," 1580s, of unknown origin, perhaps from Middle English clapper "rabbit-hole," from Old French clapoire (Modern French clapier), originally "rabbit burrow" (of uncertain origin), but given a slang extension to "brothel" and also the name of a disease of some sort. In English originally also a verb, "to infect with clap." Related: Clap-doctor.
clapboard (n.): 1520s, partial translation of Middle Dutch klapholt (borrowed into English late 14c. as clapholt), from klappen "to fit" + Low German holt "wood, board" (see holt). Compare German Klappholz. Originally small boards of split oak, imported from northern Germany and cut by coopers to make barrel staves; the meaning "long, thin board used for roofing or to cover the exterior of wooden buildings" is from 1640s, American English.
clapper (n.): late 13c., agent noun from clap (v.). Meaning "tongue of a bell" is from late 14c. Old English had clipur. Meaning "hinged board snapped in front of a camera at the start of filming to synchronize picture and sound" is from 1940.