Meanings of so suave in English

The youth might have been discussing a fancy dance, so suave and polite was he.

Cowperwood was so suave, so commercial.

He expected a storm of rage from Worry, but never had the coach been so suave, so kindly, so magnetic.

Mrs. Peck was somewhat taken aback by this blunt expression of opinion coming from a man apparently so suave and gentle.

Desmond felt that the stranger was becoming personal; but his manner was so suave and sympathetic that he could not take offense.

What happened in the intervening three years wasn't always so suave but Tommy Lyons last night formally ended his term as Dublin senior football manager.

Is not her song, so harmonious, so suave, so well attuned to the season, the very voice of the spring?...