facinorous (adj.)youdaoicibaDictYouDict[facinorous 词源字典]
"extremely wicked," 1540s, from Latin facinorosus, from stem of facinus "a deed," especially a bad one, from facere "to do" (see factitious). "Very common in 17th c." [OED].[facinorous etymology, facinorous origin, 英语词源]