The Oxford Thesaurus An A-Z Dictionary of Synonyms - debonairadj.

1) suave, soign‚(e) , elegant, urbane, refined, dapper, genteel, well-bred, courteous, civil, mannerly, gracious, polite, affable, obliging, pleasant, Colloq smooth: Despite his vicious temper, he was most debonair in company. 2) carefree, insouciant, gay, nonchalant, light-hearted, dashing, charming, cheerful, buoyant, jaunty, sprightly: Being handsome and debonair, he was much sought after by hostesses.