Word Origin & History
slickO.E. -slician (attested in nigslicod "newly made sleek"), from P.Gmc. *slikojanan, from base *slikaz (cf. O.N. slikr "smooth," O.H.G. slihhan, Ger. schleichen "to creep, crawl, sneak," Du. slijk "mud, mire"), from PIE *sleig- "to smooth, glide, be muddy," from base *(s)lei- "slimy" (cf. O.E. lim "birdlime;"
L. limus "slime," linere "to anoint;" Skt. linati "sticks, stays"). The adj. is first attested c.1300, "smooth, glossy, sleek" (of skin or hair); sense of "clever in deception" is first recorded 1599.
slick1626, a kind of cosmetic, from
slick (v.). Meaning "smooth place on the surface of water caused by oil, etc." is attested from 1849. Meaning "a swindler, clever person" is attested from 1959.