slick

(adjective) done in a smooth, impressive, or effortless way

Example Sentences:

The slick car salesman convinced Tom that he needed to buy a sports car so he would be successful with the ladies.

Wilma was so slick during her job interview that she was hired right away.

From the News:

Lightning too slick for Luongo, Canucks

Media:

Similar idioms:

1. smooth sailing