In Anglo-French, someone who was genteel and well-brought-up was described as deboneire—literally "of good family or nature" (from the three-word phrase de bon aire). When the word was borrowed into English in the 13th century, it basically meant "courteous," a narrow sense now pretty much obsolete. Today's debonair incorporates charm, polish, and worldliness, often combined with a carefree attitude (think James Bond). And yes, we tend to use this sense mostly, though not exclusively, of men. The "carefree" characteristic of a debonair person influenced the modern "lighthearted, nonchalant" sense of the word, as illustrated by film critic Owen Gleiberman: "It wouldn't be wrong to call Ocean's Eleven a trifle, but it's a debonair trifle made with high-wire effrontery, the kind that can't be faked. This giddy and glancing charade is one of the most sheerly pleasurable movies to come out this year…."