Also found in: Thesaurus.
deb·o·nairalso deb·o·naire (dĕb′ə-nâr′)
1. Sophisticated; urbane.
2. Gracious and charming in a cheerful, carefree way.
[Middle English debonaire, gracious, kindly, from Old French, from de bon aire, of good lineage or disposition : de, of (from Latin dē; see de-) + bon, bonne, good (from Latin bonus; see deu- in Indo-European roots) + aire, nest, family; see aerie.]