The term 'suave and urbane' is often used to describe someone who is sophisticated, charming, and well-mannered. The crossword solution for this term is 'DEBONAIR, ' which is an adjective meaning having a courteous, affable, and gracious manner. It is derived from the French phrase 'de bon air, ' which translates to 'of good air.' This phrase was used to describe someone who had a pleasant and attractive personality.