feculent (adj.)youdaoicibaDictYouDict[feculent 词源字典]
"muddy, turbid, full of dregs or impurities," late 15c., from Middle French féculent, from Latin faeculentus "abounding in dregs," from stem faec- "sediment, dregs" (see feces) + adjective suffix -ulentus "full of." Related: Feculence.[feculent etymology, feculent origin, 英语词源]