slickness in WordNet English dictionary

1. a kind of fluent easy superficiality
   "the glibness of a high-pressure salesman"
   glibness  slickness 
   
2. verbal misrepresentation intended to take advantage of you in some way
   trickery  hocus-pocus  slickness  hanky panky  jiggery-pokery  skulduggery  skullduggery 
   
3. a slippery smoothness
   "he could feel the slickness of the tiller"
   slickness  slick  slipperiness  slip