Example : Admiring the slim smoothness of her thighs.
Some artists prefer the smoothness of a board.

Example : His eloquence attracted a large congregation.
Fluency in spoken and written English is essential.
His oily smoothness concealed his guilt from the police.

Synonyms : eloquence, fluency

Synonyms : blandness, suaveness, suavity

Example : The water was a glassy smoothness.
The weather system of the Pacific is determined by the uninterrupted smoothness of the ocean.

Example : The five-speed manual gearbox is smoothness personified.