Debonair(e)

This fanciful word is one of my favorites, as it sounds like its meaning; suave. It's just a fun thing to say, and also gives its speaker an excuse to use a Pepe le Pieu accent, which is always fun.

Its commonly used for the meaning "Suave" or "urbane", but other definitions of the word include;
1) Affable; genial
2) Carefree and gay; jaunty

The etymological history of the word comes from Latin de, of + bon, good + aire, nest, family. This Latin saying "de bon aire", meaning "of good lineage or disposition, then passed into Old French, which later became the Middle English word debonaire, meaning "gracious, kindly"

[All definitions/history from the AHD]