Smooth; polished.

Smooth and refined in behavior or manners; well bred; courteous; complaisant; obliging; civil.

Characterized by refinement, or a high degree of finish; as, polite literature.

not rude; marked by satisfactory (or especially minimal) adherence to social usages and sufficient but not noteworthy consideration for others; "even if he didn't like them he should have been civil"- W.S. Maugham

showing courtesy.

Laid-back.