slick
Definitions
Having a smooth, glossy, or slippery surface.
Done or operating in an impressively smooth, efficient, and apparently effortless way.
Characterized by superficial charm or smoothness, often implying insincerity or deceit.
Examples
The roads were incredibly slick after the freezing rain turned into ice.
He gave a slick presentation that convinced the investors to fund his startup.
The otter had a slick coat of fur that helped it glide through the water with ease.