a. [ OE. debonere, OF. de bon aire, debonaire, of good descent or lineage, excellent, debonair, F. débonnaire debonair; de of (L. de) + bon good (L. bonus) + aire. See Air, and Bounty, and cf. Bonair. ] Characterized by courteousness, affability, or gentleness; of good appearance and manners; graceful; complaisant. [ 1913 Webster ]
Was never prince so meek and debonair. Spenser. [ 1913 Webster ]
n. [ OF. debonaireté, F. débonnaireté. ] Debonairness. [ Obs. ] Chaucer. [ 1913 Webster ]
adv. Courteously; elegantly. [ 1913 Webster ]
n. The quality of being debonair; good humor; gentleness; courtesy. Sterne. [ 1913 Webster ]