coyyoudaoicibaDictYouDict[coy 词源字典]
coy: [14] Essentially, coy is the same word as quiet, and ‘quiet’ is what it meant when it first came into English (it soon developed to ‘shyly reserved’, and the sense ‘quiet’ died out in the 17th century). Its ultimate source was Latin quiētus, but whereas in the case of quiet this passed directly through Old French, coy came via the more circuitous route of Vulgar Latin *quētus, which produced early Old French quei, and later coi, the source of the English word.
=> quiet[coy etymology, coy origin, 英语词源]
coy (adj.)youdaoicibaDictYouDict
early 14c., "quiet, modest, demure," from Old French coi, earlier quei "quiet, still, placid, gentle," ultimately from Latin quietus "resting, at rest" (see quiet (n.)). Meaning "shy" emerged late 14c. Meaning "unwilling to commit" is 1961. Related: Coyly; coyness.