Formal:
* The diplomat's suavity disarmed his opponents and facilitated a successful negotiation.
* Despite the tense situation, the CEO maintained a suavity that calmed the investors.
* Her performance on stage was marked by suavity and grace.
Informal:
* He charmed his way into the party with his usual suavity.
* You could tell he was a ladies' man by the way he spoke with such suavity.
* She handled the awkward situation with suavity and humor.
Figurative:
* The suavity of the music lulled the audience into a trance.
* The suavity of the sunset painted the sky in vibrant hues.
Remember: Suavity refers to a smooth, polished, and confident manner. It can be used to describe a person's demeanor, their speech, or even a more abstract concept.