derelict (adj.)youdaoicibaDictYouDict[derelict 词源字典]
1640s, from Latin derelictus "solitary, deserted," past participle of dereliquere "to abandon, forsake, desert," from de- "entirely" + relinquere "leave behind" (see relinquish). Originally especially of vessels abandoned at sea or stranded on shore. As a noun, from 1660s.[derelict etymology, derelict origin, 英语词源]