Suavity (noun)

1. The quality of being suave; politeness, charm, and sophisticated grace.
2. Elegant or refined manners and behavior.

Origin:

From the latin suavitas ("smoothness, pleasantness"), from suavis ("pleasant, swee.t")

Examples:

1. He was well-known for his suavity and charm.
2. His suavity made him a hit at parties and social events.
3. The ambassador's suavity was instrumental in defusing tensions between the two countries.
4. Her suavity and poise were admired by all.
5. His suavity and tact made him an excellent negotiator.