captive (adj.)youdaoicibaDictYouDict[captive 词源字典]
late 14c., "imprisoned, enslaved," from Latin captivus "caught, taken prisoner," from captus, past participle of capere "to take, hold, seize" (see capable). As a noun from c. 1400; an Old English noun was hæftling, from hæft "taken, seized."[captive etymology, captive origin, 英语词源]