ETYM Old Eng. debonere, Old Fren. de bon aire, debonaire, of good descent or lineage, excellent, debonair, French débonnaire debonair; de of (Latin de) + bon good (Latin bonus) + aire. Related to Air, and Bounty, Bonair.
Having a sophisticated charm; SYN. debonaire, debonnaire, suave.
Having an easygoing and cheerful disposition