From Longman Dictionary of Contemporary Englishdebonairdeb‧o‧nair /ˌdebəˈneə◂ $ -ˈner◂/ adjective old-fashioned FASHIONABLEa man who is debonair is fashionable and confident
Examples from the Corpus
debonair• Oh, he was charming and debonair - but he was no match for Damian Flint.• The thought of debonair Seb Smith being beaten by spotty, horrid little Nails tickled Nutty's imagination.• So the debonair Simon had made it big in the financial world.• a stylish, debonair young manOrigin debonair (1200-1300) Old French de bonne aire “of good family or nature” 