suave 
(swäv)
(swäv)adj. suav·er, suav·est
Courteous and elegant; gracious and sophisticated.
[French, agreeable, from Old French, from Latin suāvis, delightful, sweet; see swād- in the Appendix of Indo-European roots.]
suavely adv.
suaveness, suavi·ty (swävĭ-tē) n.