lubricous (adj.)youdaoicibaDictYouDict[lubricous 词源字典]
1530s, "lascivious," from Latin lubricus "slippery, smooth," from lubricus "slippery" (see lubricant (adj.)). Literal meaning "slippery, oily" is from 1650s in English; figurative sense of "shifty, elusive" is from 1640s. Also lubricious (1580s).[lubricous etymology, lubricous origin, 英语词源]