lubric
adjective
lu·bric ˈlü-brik 
archaic
: lubricious
lubrical
ˈlü-bri-kəl
adjective 
Word History
Etymology
borrowed from Middle French & Latin; Middle French lubrique "slippery, unstable, lascivious," borrowed from Latin lūbricus "slippery, hard to hold, hazardous" (Late Latin also "morally weak, lascivious") — more at sleeve
First Known Use
15th century, in the meaning defined above