Englishdebonair
adjective
a debonair young man:
suave, urbane, sophisticated, cultured, self-possessed, self-assured, confident, charming, gracious, well mannered, civil, courteous, gallant, chivalrous, gentlemanly, refined, polished, well bred, genteel, dignified, courtly;
well dressed, well groomed, well turned out, elegant, stylish, smart, dashing, dapper, spruce, trim, attractive;
French soigné;
informal smooth, swish, swanky, snappy, sharp, cool;
North American, informal spiffy, fly;
US, informal on fleek;
dated mannerly;
archaic trig, gentle.
▷antonyms unsophisticated.
debonair Oxford Dictionary of English