funest (adj.)youdaoicibaDictYouDict[funest 词源字典]
"portending death," 1650s, obsolete from 18c. except in poetry, from Middle French funeste "unlucky" (14c.), from Latin funestus "causing death, destructive; mournful," from funus "a funeral" (see funeral (n.)). Related: Funestal (1550s).[funest etymology, funest origin, 英语词源]