Definition of Slicker

Noun: slicker sli-ku(r)

[N. Amer] A macintosh made from cotton fabric treated with oil and pigment to make it waterproof
- oilskin
A person with good manners and stylish clothing
Someone who leads you to believe something that is not true
- deceiver, cheat, cheater, trickster, beguiler

Adjective: slick (slicker,slickest) slik

Made slick by e.g. ice or grease
"pavements slick with ice"; "roads are slickest when rain has just started and hasn't had time to wash away the oil"
Having only superficial plausibility
"a slick commercial";
- glib, pat
Having a smooth, gleaming surface reflecting light
"slick seals and otters";
- satiny, sleek, silken, silky, silklike
Marked by skill in deception
"a slick evasive answer";
- crafty, cunning, dodgy [Brit], foxy, guileful, knavish, sly, tricksy, tricky, wily