dissolute (adj.)youdaoicibaDictYouDict[dissolute 词源字典]
late 14c., "loose, negligent, morally or religiously lax," from Latin dissolutus "loose, disconnected," past participle of dissolvere "loosen up" (see dissolve). A figurative use of the classical Latin word. Related: Dissolutely; dissoluteness.[dissolute etymology, dissolute origin, 英语词源]