slicker

(noun) a macintosh made from cotton fabric treated with oil and pigment to make it waterproof. Synonyms: oilskin.

(noun) a person with good manners and stylish clothing.

(noun) someone who leads you to believe something that is not true. Synonyms: deceiver, cheat, cheater, trickster, beguiler.

(adj) made slick by e.g. ice or grease. Synonyms: slick. Examples: "Sidewalks slick with ice." "Roads are slickest when rain has just started and hasn't had time to wash away the oil."

(adj) having only superficial plausibility. Synonyms: glib, pat, slick. Examples: "Glib promises." "A slick commercial."

(adj) having a smooth, gleaming surface reflecting light. Synonyms: satiny, sleek, silken, silky, silklike, slick. Examples: "Glossy auburn hair." "Satiny gardenia petals." "Sleek black fur." "Silken eyelashes." "Silky skin." "A silklike fabric." "Slick seals and otters."

(adj) marked by skill in deception. Synonyms: crafty, cunning, dodgy, foxy, guileful, knavish, slick, sly, tricksy, tricky, wily. Examples: "Cunning men often pass for wise." "Deep political machinations." "A foxy scheme." "A slick evasive answer." "Sly as a fox." "Tricky dick." "A wily old attorney."