subdolousyoudaoicibaDictYouDict[subdolous 词源字典]
"Cunning, crafty; sly, underhand", Late 16th cent.; earliest use found in Adam King (fl. 1588). Either from post-classical Latin subdolosus rather cunning, or from classical Latin subdolus sly, deceitful, treacherous (from sub- + dolus) + -ous.[subdolous etymology, subdolous origin, 英语词源]