smoothness

Powerful and effective language.

“his oily smoothness concealed his guilt from the police”

The quality of being bland and gracious or ingratiating in manner.

A texture without roughness; smooth to the touch.

“admiring the slim smoothness of her thighs”

“some artists prefer the smoothness of a board”

The quality of being free from errors or interruptions.

“the five-speed manual gearbox is smoothness personified”

The quality of having a level and even surface.

“the water was a glassy smoothness”

“the weather system of the Pacific is determined by the uninterrupted smoothness of the ocean”